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A SIMPLE WAY TO TEST THE VALIDITY OF QUESTIONNAIRES

  • Statistics
On 03/06/2025

Testing the validity of the questionnaire as a measuring tool can be conducted in various ways. The ideal is to use Confirmatory Factor Analysis (CFA). There are several software programs that can be used for CFA, such as LISREL, AMOS,Read More

AN INTRODUCTION TO THE MULTIPLE LINEAR REGRESSION

  • Statistics
On 27/05/2025

Like simple linear regression, the model described below is also often used in research in communication science to test the influence of one variable on another variable. This model is called multiple linear regression. Here are two examples of researchRead More

GETTING STARTED WITH SIMPLE LINEAR REGRESSION

  • Statistics
On 20/05/2025

          Research in communication science frequently tests whether a variable influences another variable. For example: 1) Does the number of social media posts affect audience engagement? 2) Does the length of a message affect the listener’sRead More

THE SPEARMAN’S RANK-ORDER CORRELATION COEFFICIENT

  • Statistics
On 16/05/2025

In the previous post, we learned how to test a relationship between two categorical/nominal variables. This post discusses how to test a relationship between two variables, each of which has an ordinal or higher level of measurement. The correlation coefficientRead More

THE CRAMER’S V CORRELATION COEFFICIENT

  • Statistics
On 06/05/2025

Statistics can only process quantitative data? BIG  MISTAKE! Statistics can process all types of data; the only difference is the method of processing. In this article, we will learn how to test for a relationship between two variables whose valuesRead More

SOME EXAMPLES OF NORMALITY TEST IMPLEMENTATION

  • Statistics
On 28/04/2025

In the previous post, we were introduced to the normality test. This time, we will see some phenomena related to this test. Download the following file: (click here) In the file there is a variable named norm200. Using SPSS, displayRead More

AN INTRODUCTION TO THE NORMALITY TESTS

  • Statistics
On 22/04/2025

In the previous post, we learned that the t statistic can be used in a one-sample hypothesis test for means, and the sample must come from a normally distributed population. Therefore, we usually perform a “normality test” to check whetherRead More

ONE-SAMPLE HYPOTHESIS TESTING FOR POPULATION MEAN IN COMMUNICATION SCIENCE (2)

  • Statistics
On 07/04/2025

In a previous post, we explained how statistical hypothesis testing was conducted. In principle, there are four major steps, namely 1) formulate H0 and H1, 2) determine the level of significance, 3) determine the appropriate test statistic and the H0Read More

ONE-SAMPLE HYPOTHESIS TESTING FOR POPULATION MEAN IN COMMUNICATION SCIENCE (1)

  • Statistics
On 07/04/2025

The word “hypothesis” is rarely found in everyday conversation. However, we often hear the words “idea” or “(educated) guess”. An idea is not necessarily correct. To find out whether the idea is right, we conduct an investigation. The same isRead More

THE NORMAL DISTRIBUTION IN COMMUNICATION SCIENCE

  • Statistics
On 25/03/2025

In statistics, the normal distribution is an example of a continuous probability distribution. With the normal distribution, many things can be concluded or predicted. Furthermore, the normal distribution also plays a role in communication science. Examples of applications in theRead More

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