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14 Quantitative analysis: Descriptive statistics

Numeric data collected in a research project can be analysed quantitatively using statistical tools in two different ways. Descriptive analysis refers to statistically describing, aggregating, and presenting the constructs of interest or associations between these constructs. Inferential analysis refers to the statistical testing of hypotheses (theory testing). In this chapter, we will examine statistical techniques used for descriptive analysis, and the next chapter will examine statistical techniques for inferential analysis. Much of today’s quantitative data analysis is conducted using software programs such as SPSS or SAS. Readers are advised to familiarise themselves with one of these programs for understanding the concepts described in this chapter.

Data preparation

In research projects, data may be collected from a variety of sources: postal surveys, interviews, pretest or posttest experimental data, observational data, and so forth. This data must be converted into a machine-readable, numeric format, such as in a spreadsheet or a text file, so that they can be analysed by computer programs like SPSS or SAS. Data preparation usually follows the following steps:

Data coding. Coding is the process of converting data into numeric format. A codebook should be created to guide the coding process. A codebook is a comprehensive document containing a detailed description of each variable in a research study, items or measures for that variable, the format of each item (numeric, text, etc.), the response scale for each item (i.e., whether it is measured on a nominal, ordinal, interval, or ratio scale, and whether this scale is a five-point, seven-point scale, etc.), and how to code each value into a numeric format. For instance, if we have a measurement item on a seven-point Likert scale with anchors ranging from ‘strongly disagree’ to ‘strongly agree’, we may code that item as 1 for strongly disagree, 4 for neutral, and 7 for strongly agree, with the intermediate anchors in between. Nominal data such as industry type can be coded in numeric form using a coding scheme such as: 1 for manufacturing, 2 for retailing, 3 for financial, 4 for healthcare, and so forth (of course, nominal data cannot be analysed statistically). Ratio scale data such as age, income, or test scores can be coded as entered by the respondent. Sometimes, data may need to be aggregated into a different form than the format used for data collection. For instance, if a survey measuring a construct such as ‘benefits of computers’ provided respondents with a checklist of benefits that they could select from, and respondents were encouraged to choose as many of those benefits as they wanted, then the total number of checked items could be used as an aggregate measure of benefits. Note that many other forms of data—such as interview transcripts—cannot be converted into a numeric format for statistical analysis. Codebooks are especially important for large complex studies involving many variables and measurement items, where the coding process is conducted by different people, to help the coding team code data in a consistent manner, and also to help others understand and interpret the coded data.

Data entry. Coded data can be entered into a spreadsheet, database, text file, or directly into a statistical program like SPSS. Most statistical programs provide a data editor for entering data. However, these programs store data in their own native format—e.g., SPSS stores data as .sav files—which makes it difficult to share that data with other statistical programs. Hence, it is often better to enter data into a spreadsheet or database where it can be reorganised as needed, shared across programs, and subsets of data can be extracted for analysis. Smaller data sets with less than 65,000 observations and 256 items can be stored in a spreadsheet created using a program such as Microsoft Excel, while larger datasets with millions of observations will require a database. Each observation can be entered as one row in the spreadsheet, and each measurement item can be represented as one column. Data should be checked for accuracy during and after entry via occasional spot checks on a set of items or observations. Furthermore, while entering data, the coder should watch out for obvious evidence of bad data, such as the respondent selecting the ‘strongly agree’ response to all items irrespective of content, including reverse-coded items. If so, such data can be entered but should be excluded from subsequent analysis.

Data transformation. Sometimes, it is necessary to transform data values before they can be meaningfully interpreted. For instance, reverse coded items—where items convey the opposite meaning of that of their underlying construct—should be reversed (e.g., in a 1-7 interval scale, 8 minus the observed value will reverse the value) before they can be compared or combined with items that are not reverse coded. Other kinds of transformations may include creating scale measures by adding individual scale items, creating a weighted index from a set of observed measures, and collapsing multiple values into fewer categories (e.g., collapsing incomes into income ranges).

Univariate analysis

Univariate analysis—or analysis of a single variable—refers to a set of statistical techniques that can describe the general properties of one variable. Univariate statistics include: frequency distribution, central tendency, and dispersion. The frequency distribution of a variable is a summary of the frequency—or percentages—of individual values or ranges of values for that variable. For instance, we can measure how many times a sample of respondents attend religious services—as a gauge of their ‘religiosity’—using a categorical scale: never, once per year, several times per year, about once a month, several times per month, several times per week, and an optional category for ‘did not answer’. If we count the number or percentage of observations within each category—except ‘did not answer’ which is really a missing value rather than a category—and display it in the form of a table, as shown in Figure 14.1, what we have is a frequency distribution. This distribution can also be depicted in the form of a bar chart, as shown on the right panel of Figure 14.1, with the horizontal axis representing each category of that variable and the vertical axis representing the frequency or percentage of observations within each category.

With very large samples, where observations are independent and random, the frequency distribution tends to follow a plot that looks like a bell-shaped curve—a smoothed bar chart of the frequency distribution—similar to that shown in Figure 14.2. Here most observations are clustered toward the centre of the range of values, with fewer and fewer observations clustered toward the extreme ends of the range. Such a curve is called a normal distribution .

Lastly, the mode is the most frequently occurring value in a distribution of values. In the previous example, the most frequently occurring value is 15, which is the mode of the above set of test scores. Note that any value that is estimated from a sample, such as mean, median, mode, or any of the later estimates are called a statistic .

Bivariate analysis

Bivariate analysis examines how two variables are related to one another. The most common bivariate statistic is the bivariate correlation —often, simply called ‘correlation’—which is a number between -1 and +1 denoting the strength of the relationship between two variables. Say that we wish to study how age is related to self-esteem in a sample of 20 respondents—i.e., as age increases, does self-esteem increase, decrease, or remain unchanged?. If self-esteem increases, then we have a positive correlation between the two variables, if self-esteem decreases, then we have a negative correlation, and if it remains the same, we have a zero correlation. To calculate the value of this correlation, consider the hypothetical dataset shown in Table 14.1.

After computing bivariate correlation, researchers are often interested in knowing whether the correlation is significant (i.e., a real one) or caused by mere chance. Answering such a question would require testing the following hypothesis:

Social Science Research: Principles, Methods and Practices (Revised edition) Copyright © 2019 by Anol Bhattacherjee is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License , except where otherwise noted.

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The Art of Sophisticated Quantitative Description in Higher Education Research

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• Daniel Klasik 3 &
• William Zahran 3  

Part of the book series: Higher Education: Handbook of Theory and Research ((HATR,volume 37))

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While the emphasis on causal research in education has become increasingly important in recent years, thoughtful, descriptive analysis remains necessary for providing the conceptual grounding for experimental and quasi-experimental research and understanding our world. Sophisticated quantitative description is an approach to research that does not attempt to determine a causal impact. Instead, its purpose is to critically analyze and present data using purposeful methods to build a theory-driven story about a phenomenon that future research can investigate further. Sophisticated description can offer new ways to look at problems of research and practice, provide context and explanation for causal findings, or open new avenues of research. This chapter defines sophisticated quantitative description and provides an overview of its uses in higher education research. It outlines the numerous goals of sophisticated descriptive research and offers potential methods and approaches for conducting sophisticated description. Exemplars and discussion of published sophisticated descriptive research from the higher education literature are included throughout. The chapter concludes with an application of sophisticated description for analyzing college application behavior in the United States using social network analysis.

Nicholas Hillman was the Associate Editor for this chapter.

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Acknowledgments

The social network analysis of students’ college application choices described in this chapter was supported by a National Academy of Education/Spencer Foundation postdoctoral fellowship.

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Klasik, D., Zahran, W. (2022). The Art of Sophisticated Quantitative Description in Higher Education Research. In: Perna, L.W. (eds) Higher Education: Handbook of Theory and Research. Higher Education: Handbook of Theory and Research, vol 37. Springer, Cham. https://doi.org/10.1007/978-3-030-76660-3_12

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4 Descriptive Analysis

• Published: March 2018
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Descriptive statistics allow researchers to use numbers to begin to tell the stories that exist in their data. This chapter presents an overview of the basic statistical tools researchers can use to summarize, display, and interpret data. The chapter presents guidelines for interpreting data and examples of typical sorts of data that music education researchers may gather. Statistical analyses suitable for identifying how data are distributed, determining typical values of a distribution, and describing how individuals differ on measured variables of interest are described. Approaches for graphing data that are appropriate for variables of different measurement scales are also described.

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• Indian Dermatol Online J
• v.10(1); Jan-Feb 2019

Types of Variables, Descriptive Statistics, and Sample Size

Feroze kaliyadan.

Department of Dermatology, King Faisal University, Al Hofuf, Saudi Arabia

Vinay Kulkarni

1 Department of Dermatology, Prayas Amrita Clinic, Pune, Maharashtra, India

This short “snippet” covers three important aspects related to statistics – the concept of variables , the importance, and practical aspects related to descriptive statistics and issues related to sampling – types of sampling and sample size estimation.

What is a variable?[ 1 , 2 ] To put it in very simple terms, a variable is an entity whose value varies. A variable is an essential component of any statistical data. It is a feature of a member of a given sample or population, which is unique, and can differ in quantity or quantity from another member of the same sample or population. Variables either are the primary quantities of interest or act as practical substitutes for the same. The importance of variables is that they help in operationalization of concepts for data collection. For example, if you want to do an experiment based on the severity of urticaria, one option would be to measure the severity using a scale to grade severity of itching. This becomes an operational variable. For a variable to be “good,” it needs to have some properties such as good reliability and validity, low bias, feasibility/practicality, low cost, objectivity, clarity, and acceptance. Variables can be classified into various ways as discussed below.

Quantitative vs qualitative

A variable can collect either qualitative or quantitative data. A variable differing in quantity is called a quantitative variable (e.g., weight of a group of patients), whereas a variable differing in quality is called a qualitative variable (e.g., the Fitzpatrick skin type)

A simple test which can be used to differentiate between qualitative and quantitative variables is the subtraction test. If you can subtract the value of one variable from the other to get a meaningful result, then you are dealing with a quantitative variable (this of course will not apply to rating scales/ranks).

Quantitative variables can be either discrete or continuous

Discrete variables are variables in which no values may be assumed between the two given values (e.g., number of lesions in each patient in a sample of patients with urticaria).

Continuous variables, on the other hand, can take any value in between the two given values (e.g., duration for which the weals last in the same sample of patients with urticaria). One way of differentiating between continuous and discrete variables is to use the “mid-way” test. If, for every pair of values of a variable, a value exactly mid-way between them is meaningful, the variable is continuous. For example, two values for the time taken for a weal to subside can be 10 and 13 min. The mid-way value would be 11.5 min which makes sense. However, for a number of weals, suppose you have a pair of values – 5 and 8 – the midway value would be 6.5 weals, which does not make sense.

Under the umbrella of qualitative variables, you can have nominal/categorical variables and ordinal variables

Nominal/categorical variables are, as the name suggests, variables which can be slotted into different categories (e.g., gender or type of psoriasis).

Ordinal variables or ranked variables are similar to categorical, but can be put into an order (e.g., a scale for severity of itching).

Dependent and independent variables

In the context of an experimental study, the dependent variable (also called outcome variable) is directly linked to the primary outcome of the study. For example, in a clinical trial on psoriasis, the PASI (psoriasis area severity index) would possibly be one dependent variable. The independent variable (sometime also called explanatory variable) is something which is not affected by the experiment itself but which can be manipulated to affect the dependent variable. Other terms sometimes used synonymously include blocking variable, covariate, or predictor variable. Confounding variables are extra variables, which can have an effect on the experiment. They are linked with dependent and independent variables and can cause spurious association. For example, in a clinical trial for a topical treatment in psoriasis, the concomitant use of moisturizers might be a confounding variable. A control variable is a variable that must be kept constant during the course of an experiment.

Descriptive Statistics

Statistics can be broadly divided into descriptive statistics and inferential statistics.[ 3 , 4 ] Descriptive statistics give a summary about the sample being studied without drawing any inferences based on probability theory. Even if the primary aim of a study involves inferential statistics, descriptive statistics are still used to give a general summary. When we describe the population using tools such as frequency distribution tables, percentages, and other measures of central tendency like the mean, for example, we are talking about descriptive statistics. When we use a specific statistical test (e.g., Mann–Whitney U-test) to compare the mean scores and express it in terms of statistical significance, we are talking about inferential statistics. Descriptive statistics can help in summarizing data in the form of simple quantitative measures such as percentages or means or in the form of visual summaries such as histograms and box plots.

Descriptive statistics can be used to describe a single variable (univariate analysis) or more than one variable (bivariate/multivariate analysis). In the case of more than one variable, descriptive statistics can help summarize relationships between variables using tools such as scatter plots.

Descriptive statistics can be broadly put under two categories:

• Sorting/grouping and illustration/visual displays
• Summary statistics.

Sorting and grouping

Sorting and grouping is most commonly done using frequency distribution tables. For continuous variables, it is generally better to use groups in the frequency table. Ideally, group sizes should be equal (except in extreme ends where open groups are used; e.g., age “greater than” or “less than”).

Another form of presenting frequency distributions is the “stem and leaf” diagram, which is considered to be a more accurate form of description.

Suppose the weight in kilograms of a group of 10 patients is as follows:

56, 34, 48, 43, 87, 78, 54, 62, 61, 59

The “stem” records the value of the “ten's” place (or higher) and the “leaf” records the value in the “one's” place [ Table 1 ].

Stem and leaf plot

Illustration/visual display of data

The most common tools used for visual display include frequency diagrams, bar charts (for noncontinuous variables) and histograms (for continuous variables). Composite bar charts can be used to compare variables. For example, the frequency distribution in a sample population of males and females can be illustrated as given in Figure 1 .

Composite bar chart

A pie chart helps show how a total quantity is divided among its constituent variables. Scatter diagrams can be used to illustrate the relationship between two variables. For example, global scores given for improvement in a condition like acne by the patient and the doctor [ Figure 2 ].

Scatter diagram

Summary statistics

The main tools used for summary statistics are broadly grouped into measures of central tendency (such as mean, median, and mode) and measures of dispersion or variation (such as range, standard deviation, and variance).

Imagine that the data below represent the weights of a sample of 15 pediatric patients arranged in ascending order:

30, 35, 37, 38, 38, 38, 42, 42, 44, 46, 47, 48, 51, 53, 86

Just having the raw data does not mean much to us, so we try to express it in terms of some values, which give a summary of the data.

The mean is basically the sum of all the values divided by the total number. In this case, we get a value of 45.

The problem is that some extreme values (outliers), like “'86,” in this case can skew the value of the mean. In this case, we consider other values like the median, which is the point that divides the distribution into two equal halves. It is also referred to as the 50 th percentile (50% of the values are above it and 50% are below it). In our previous example, since we have already arranged the values in ascending order we find that the point which divides it into two equal halves is the 8 th value – 42. In case of a total number of values being even, we choose the two middle points and take an average to reach the median.

The mode is the most common data point. In our example, this would be 38. The mode as in our case may not necessarily be in the center of the distribution.

The median is the best measure of central tendency from among the mean, median, and mode. In a “symmetric” distribution, all three are the same, whereas in skewed data the median and mean are not the same; lie more toward the skew, with the mean lying further to the skew compared with the median. For example, in Figure 3 , a right skewed distribution is seen (direction of skew is based on the tail); data values' distribution is longer on the right-hand (positive) side than on the left-hand side. The mean is typically greater than the median in such cases.

Location of mode, median, and mean

Measures of dispersion

The range gives the spread between the lowest and highest values. In our previous example, this will be 86-30 = 56.

A more valuable measure is the interquartile range. A quartile is one of the values which break the distribution into four equal parts. The 25 th percentile is the data point which divides the group between the first one-fourth and the last three-fourth of the data. The first one-fourth will form the first quartile. The 75 th percentile is the data point which divides the distribution into a first three-fourth and last one-fourth (the last one-fourth being the fourth quartile). The range between the 25 th percentile and 75 th percentile is called the interquartile range.

Variance is also a measure of dispersion. The larger the variance, the further the individual units are from the mean. Let us consider the same example we used for calculating the mean. The mean was 45.

For the first value (30), the deviation from the mean will be 15; for the last value (86), the deviation will be 41. Similarly we can calculate the deviations for all values in a sample. Adding these deviations and averaging will give a clue to the total dispersion, but the problem is that since the deviations are a mix of negative and positive values, the final total becomes zero. To calculate the variance, this problem is overcome by adding squares of the deviations. So variance would be the sum of squares of the variation divided by the total number in the population (for a sample we use “n − 1”). To get a more realistic value of the average dispersion, we take the square root of the variance, which is called the “standard deviation.”

The box plot

The box plot is a composite representation that portrays the mean, median, range, and the outliers [ Figure 4 ].

The concept of skewness and kurtosis

Skewness is a measure of the symmetry of distribution. Basically if the distribution curve is symmetric, it looks the same on either side of the central point. When this is not the case, it is said to be skewed. Kurtosis is a representation of outliers. Distributions with high kurtosis tend to have “heavy tails” indicating a larger number of outliers, whereas distributions with low kurtosis have light tails, indicating lesser outliers. There are formulas to calculate both skewness and kurtosis [Figures ​ [Figures5 5 – 8 ].

Positive skew

High kurtosis (positive kurtosis – also called leptokurtic)

Negative skew

Low kurtosis (negative kurtosis – also called “Platykurtic”)

Sample Size

In an ideal study, we should be able to include all units of a particular population under study, something that is referred to as a census.[ 5 , 6 ] This would remove the chances of sampling error (difference between the outcome characteristics in a random sample when compared with the true population values – something that is virtually unavoidable when you take a random sample). However, it is obvious that this would not be feasible in most situations. Hence, we have to study a subset of the population to reach to our conclusions. This representative subset is a sample and we need to have sufficient numbers in this sample to make meaningful and accurate conclusions and reduce the effect of sampling error.

We also need to know that broadly sampling can be divided into two types – probability sampling and nonprobability sampling. Examples of probability sampling include methods such as simple random sampling (each member in a population has an equal chance of being selected), stratified random sampling (in nonhomogeneous populations, the population is divided into subgroups – followed be random sampling in each subgroup), systematic (sampling is based on a systematic technique – e.g., every third person is selected for a survey), and cluster sampling (similar to stratified sampling except that the clusters here are preexisting clusters unlike stratified sampling where the researcher decides on the stratification criteria), whereas nonprobability sampling, where every unit in the population does not have an equal chance of inclusion into the sample, includes methods such as convenience sampling (e.g., sample selected based on ease of access) and purposive sampling (where only people who meet specific criteria are included in the sample).

An accurate calculation of sample size is an essential aspect of good study design. It is important to calculate the sample size much in advance, rather than have to go for post hoc analysis. A sample size that is too less may make the study underpowered, whereas a sample size which is more than necessary might lead to a wastage of resources.

We will first go through the sample size calculation for a hypothesis-based design (like a randomized control trial).

The important factors to consider for sample size calculation include study design, type of statistical test, level of significance, power and effect size, variance (standard deviation for quantitative data), and expected proportions in the case of qualitative data. This is based on previous data, either based on previous studies or based on the clinicians' experience. In case the study is something being conducted for the first time, a pilot study might be conducted which helps generate these data for further studies based on a larger sample size). It is also important to know whether the data follow a normal distribution or not.

Two essential aspects we must understand are the concept of Type I and Type II errors. In a study that compares two groups, a null hypothesis assumes that there is no significant difference between the two groups, and any observed difference being due to sampling or experimental error. When we reject a null hypothesis, when it is true, we label it as a Type I error (also denoted as “alpha,” correlating with significance levels). In a Type II error (also denoted as “beta”), we fail to reject a null hypothesis, when the alternate hypothesis is actually true. Type II errors are usually expressed as “1- β,” correlating with the power of the test. While there are no absolute rules, the minimal levels accepted are 0.05 for α (corresponding to a significance level of 5%) and 0.20 for β (corresponding to a minimum recommended power of “1 − 0.20,” or 80%).

Effect size and minimal clinically relevant difference

For a clinical trial, the investigator will have to decide in advance what clinically detectable change is significant (for numerical data, this is could be the anticipated outcome means in the two groups, whereas for categorical data, it could correlate with the proportions of successful outcomes in two groups.). While we will not go into details of the formula for sample size calculation, some important points are as follows:

In the context where effect size is involved, the sample size is inversely proportional to the square of the effect size. What this means in effect is that reducing the effect size will lead to an increase in the required sample size.

Reducing the level of significance (alpha) or increasing power (1-β) will lead to an increase in the calculated sample size.

An increase in variance of the outcome leads to an increase in the calculated sample size.

A note is that for estimation type of studies/surveys, sample size calculation needs to consider some other factors too. This includes an idea about total population size (this generally does not make a major difference when population size is above 20,000, so in situations where population size is not known we can assume a population of 20,000 or more). The other factor is the “margin of error” – the amount of deviation which the investigators find acceptable in terms of percentages. Regarding confidence levels, ideally, a 95% confidence level is the minimum recommended for surveys too. Finally, we need an idea of the expected/crude prevalence – either based on previous studies or based on estimates.

Sample size calculation also needs to add corrections for patient drop-outs/lost-to-follow-up patients and missing records. An important point is that in some studies dealing with rare diseases, it may be difficult to achieve desired sample size. In these cases, the investigators might have to rework outcomes or maybe pool data from multiple centers. Although post hoc power can be analyzed, a better approach suggested is to calculate 95% confidence intervals for the outcome and interpret the study results based on this.

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Conflicts of interest.

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Methodology

• Descriptive Research | Definition, Types, Methods & Examples

Descriptive Research | Definition, Types, Methods & Examples

Published on May 15, 2019 by Shona McCombes . Revised on June 22, 2023.

Descriptive research aims to accurately and systematically describe a population, situation or phenomenon. It can answer what , where , when and how   questions , but not why questions.

A descriptive research design can use a wide variety of research methods  to investigate one or more variables . Unlike in experimental research , the researcher does not control or manipulate any of the variables, but only observes and measures them.

Table of contents

When to use a descriptive research design, descriptive research methods, other interesting articles.

Descriptive research is an appropriate choice when the research aim is to identify characteristics, frequencies, trends, and categories.

It is useful when not much is known yet about the topic or problem. Before you can research why something happens, you need to understand how, when and where it happens.

Descriptive research question examples

• How has the Amsterdam housing market changed over the past 20 years?
• Do customers of company X prefer product X or product Y?
• What are the main genetic, behavioural and morphological differences between European wildcats and domestic cats?
• What are the most popular online news sources among under-18s?
• How prevalent is disease A in population B?

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Descriptive research is usually defined as a type of quantitative research , though qualitative research can also be used for descriptive purposes. The research design should be carefully developed to ensure that the results are valid and reliable .

Survey research allows you to gather large volumes of data that can be analyzed for frequencies, averages and patterns. Common uses of surveys include:

• Describing the demographics of a country or region
• Gauging public opinion on political and social topics
• Evaluating satisfaction with a company’s products or an organization’s services

Observations

Observations allow you to gather data on behaviours and phenomena without having to rely on the honesty and accuracy of respondents. This method is often used by psychological, social and market researchers to understand how people act in real-life situations.

Observation of physical entities and phenomena is also an important part of research in the natural sciences. Before you can develop testable hypotheses , models or theories, it’s necessary to observe and systematically describe the subject under investigation.

Case studies

A case study can be used to describe the characteristics of a specific subject (such as a person, group, event or organization). Instead of gathering a large volume of data to identify patterns across time or location, case studies gather detailed data to identify the characteristics of a narrowly defined subject.

Rather than aiming to describe generalizable facts, case studies often focus on unusual or interesting cases that challenge assumptions, add complexity, or reveal something new about a research problem .

If you want to know more about statistics , methodology , or research bias , make sure to check out some of our other articles with explanations and examples.

• Normal distribution
• Degrees of freedom
• Null hypothesis
• Discourse analysis
• Control groups
• Mixed methods research
• Non-probability sampling
• Quantitative research
• Ecological validity

Research bias

• Rosenthal effect
• Implicit bias
• Cognitive bias
• Selection bias
• Negativity bias
• Status quo bias

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Title : An Introduction on Descriptive Analysis; Its advantages and disadvantages

Research is a crucial tool for leading man towards achieving progress, findings new facts, new concepts and discovering truths which leads to better ways of doing things. In the other words, “research is a diligent search, studious inquiry, investigation, experiment or collection of information, interpretation of facts, revision of existing theories and laws aimed at discovery of new facts and findings” (Adams al.,2007,P.20). Research Begins when researchers discover real world problems and try to answer those problems with the required mechanisms, tools and methods. Therefore, research methods have gained acceptance in all branches of science and disciplines which seek to find the answer for research questions in scientific manner (Ibid). It is believed, if a research does not follow any methodology, it may produce false results. There are different types of research for different disciplines and each discipline is associated with the particular scientific tools. Social sciences are one of those branches of sciences that follow its own research methods, methodologies and tools. Research method in social sciences is a vast topic. This is due to the fact that Social sciences include a great number of disciplines namely; Political Science, International Relations, Sociology, Economics, Anthropology, Social Capital, Education, Management, History, Psychology and so forth. Within each discipline researchers apply different methods and methodologies. The most frequently used methods are laboratory experiments, comparative politics, inferential analysis, descriptive analysis, exploratory research, Analytical Research and Predictive Research. Despite differences in disciplines and methods used in research, most disciplines in social sciences share same features and use same language for interpretation and reporting of their results (Walliman, 2011). It also happens that researchers use different methodologies for the similar type of problem of a discipline, it is as a result of limiting factors such as; cost, time, availability of tools, literature, access to publications and a country’s own peculiarities and circumstances (Adams et al.,2007). Descriptive research is one of the most commonly used type of researches in social sciences. A descriptive research aims to describe a phenomena the ways it is, for example, describing social systems or relationships between events (Adams et al., 2007). This paper attempts to introduce descriptive analysis; its advantages, disadvantages an example of Descriptive Analysis and conclusion. The next section introduces Descriptive Analysis.

Related Papers

Jacob Otachi ORINA

The study sought to establish the influence of governance on corruption levels from the perspective of the Public Service in Kenya. One of the study objectives was to: assess the influence of institutional leadership on corruption levels in the Public Service. A review of literature was done anchored on Principal-Agent Theory. The study adopted both the correlational and descriptive research designs. A study population of 265 institutions (as on 2015) provided a target sample size of 157 institutions. The target respondents in the sampled institutions were public officers who had undergone training on the following disciplines: leadership, integrity, values and principles of the public service and management during the study period (2010-2015). These purposely selected respondents were subjected to questionnaire. To augment data from the questionnaires, 23 key informant interviews were conducted targeting senior officers in the public service, non-state actors and experts. Data collected was analyzed by descriptive and inferential statistics. The overall correlation analysis results showed that there was a significant but negative relationship between institutional leadership and corruption levels as supported by correlation coefficient of-.525. The regression analysis results showed the coefficient of determination R square is .291 and R is .540 at 0.05 level of significance. The coefficient of determination indicates that 29.1% of the variation on corruption level is influenced by institutional leadership. The findings

The study sought to establish the influence of governance on corruption levels in the Public Service in Kenya. One of the study objectives was to: assess the influence of stakeholder participation on corruption levels in the Public Service. A review of literature was done anchored on Stakeholder Theory. Further, the empirical review, critique of reviewed literature, a summary and the research gaps were presented. The study adopted both the correlational and descriptive research designs. A study population of 265 institutions (as at 2015) provided a target sample size of 157 institutions where 133 were positive. The target respondents (unit of observation) in the sampled institutions were public officers who had undergone training on the following disciplines: leadership, integrity, values and principles of the public service and management during the study period (2010-2015). These purposely selected respondents were subjected to questionnaire as a primary tool of data collection. To augment data from the questionnaires, 23 key informant interviews were conducted targeting senior officers in the public service, non-state actors and experts. Data collected was analyzed by descriptive and inferential statistics. Data was presented in form of pie charts, graphs, tables and equations. The overall correlation analysis results showed that there was a significant but negative relationship between stakeholder participation and corruption levels as supported by correlation coefficient of -.741. The regression analysis results showed the coefficient of determination R square is 0.548 and R is 0.720 at 0.05 significance level. The coefficient of determination indicates that 54.8% of the variation on corruption level is influenced by stakeholder participation. The findings from the study are to benefit the policy makers, public service, citizens of Kenya and other stakeholders. It also fills the knowledge gap owed to previous little research on the influence of stakeholder participation on corruption levels. The study recommended that the public service should be keen to design policies and implement programs targeted on addressing the specific stakeholder sub constructs (stakeholder voice, openness, and partnership) so as to address the run-away corruption in the public service.

Oirc Journals

Risk is a fact of life in procurement but in spite of this, majority of manufacturing companies give this topic much less attention than it deserves. However, little or no research has been published that specifically addresses the procurement risk and mitigation strategies within the manufacturing sector in Africa land more so in the I Kenyan I manufacturing I firms that is central to delivery of goods and services to its customers. The main purpose of the study was to assess the influence of risk reduction on procurement performance. The study was guided by risk compensation theory. Explanatory research design was adopted. The target population was employees from four manufacturing firms and a sample of 127 respondents were selected using Yamane’s formula from an accessible population of 187. Data was collected through structured questionnaires and was summarized, edited, coded, entered and analyzed using statistical package for social scientists (SPSS). Inferential statistics involved regression analysis. The result was as follows: Based on risk reduction strategy, the correlation result was 0.583 and β = 0.051 at P<0.05. The study concluded that risk reduction was statistically significant and had a positive influence on procurement performance. The study findings rejected the null hypothesis that there is no statistically significant influence of risk reduction strategy on procurement performance. The study recommended policy makers to embrace other risk reduction strategies tools like diversification, underwriting and hedges. The study suggests that a further study be done on specific risk reduction strategies suitable for the manufacturing sector and a further study be done that focuses on specific procurement risks affecting the manufacturing sector and their effect on procurement performance.

International Journal of Strategic Management and Procurement

Performance of microfinance institutions is indicated by contributions to social welfare, job creation, general economic empowerment and improvement of lives of the poor. Despite the interest in the sector and the subsidies that have flowed into some of the mission-oriented MFIs, it seems that most MFIs struggle with the challenge of remaining viable over the long-term. Sensing capabilities could offer a solution to this dilemma through providing a customer management system which incorporates all functional areas of the organization. Thus, the main purpose of the study was to determine effect of sensing capability on performance of micro finance institutions in Eldoret town. This study was guided by resource-based view theory. Explanatory research design was used in this study. The target population for this study comprised of 584 employees drawn from 14 MFIs within Eldoret town. Stratified and simple random sampling technique was used in this study to select a sample of 162 employees. Primary data was obtained from the respondents using questionnaire. This study used questionnaires and interview schedules to collect data from respondents. Quantitative data collected from questionnaires were analysed using descriptive statistical techniques which were the frequencies, mean, standard deviation. Qualitative data collected from interview schedules of senior managers were analysed thematically. The researcher also used inferential statistics of Pearson Product Moment Correlation to show the relationships that exist between the variables and multiple regressions and correlation analysis, the significance of each independent variable was tested at a confidence level of 95%. Analysed data was presented in form of tables, figures and percentages. From the study finding, sensing capability has a significant effect on performance of micro finance institutions in Eldoret town with a beta coefficient of 0.127 and significance of (p<0.05). The study concluded that sensing capabilities about environment is a coping capability mechanism that enables the organization to be competitive.

Danial Zemchal Media Development in Tigray

Danial Zemchal

This paper comprises an ongoing MA Thesis research project titled “Assessment of Media Development in Tigray”. The main focus of this investigation concentrates on measuring the media development based on the UNESCO’s Media Development Measures. The pillars of the assessment are the system of regulation and practice in relation to freedom of expression, transparency of media ownership and concentration, diversity and plurality of the media, media as a platform of public discourse, professional capacity building as well as capacity of media infrastructure including its inclusive access to the marginalized society. It also examines the relationship among the media development measures through statistical Measure, SPSS. The research project which spotlight in examining the media development context in Tigray began in October 2018 and lasts in July 2019. A combination of quantitative questionnaire survey, qualitative; in-depth personal interview and focus group discussion are employed. Professionals in media firms in Tigray, higher education journalism and communication schools, democratic institutions; human right office, ombudsman office, civic and civil societies, Tigray, Kunama and Irob ethnicity communities are subjects of the research. The research project is currently progressed the quantitative and qualitative data collection process and analysis and presentation will be followed.

Assessment of Media Development in Tigray

International Journal of Scientific and Technological Research

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A quantitative analysis of the complex response relationship between urban green infrastructure (ugi) structure/spatial pattern and urban thermal environment in shanghai.

1. Introduction

2. materials and methods, 2.1. study area, 2.2. data sources, 2.3. methods, 2.3.1. data preprocessing, 2.3.2. lst retrieval and generation of thermally sharpened products, 2.3.3. extraction of main variables/indicators of built environment affecting lst, 2.3.4. statistical analysis, 3.1. the relationship between ugi and lst under different spatial stratification, 3.2. response of lst to ugi pattern in uths range, 3.3. quantitative model analysis of pattern response relationship between lst and ugi, 4. discussion, 4.1. improving ugi spatial pattern to mitigate uhi effect, 4.2. improving ecological building design to enhance urban sustainability, 5. conclusions, author contributions, institutional review board statement, informed consent statement, data availability statement, conflicts of interest.

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Guan, Z.; Zhang, H. A Quantitative Analysis of the Complex Response Relationship between Urban Green Infrastructure (UGI) Structure/Spatial Pattern and Urban Thermal Environment in Shanghai. Sustainability 2024 , 16 , 6886. https://doi.org/10.3390/su16166886

Guan Z, Zhang H. A Quantitative Analysis of the Complex Response Relationship between Urban Green Infrastructure (UGI) Structure/Spatial Pattern and Urban Thermal Environment in Shanghai. Sustainability . 2024; 16(16):6886. https://doi.org/10.3390/su16166886

Guan, Zhenru, and Hao Zhang. 2024. "A Quantitative Analysis of the Complex Response Relationship between Urban Green Infrastructure (UGI) Structure/Spatial Pattern and Urban Thermal Environment in Shanghai" Sustainability 16, no. 16: 6886. https://doi.org/10.3390/su16166886

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