How to Conduct and Interpret a Multinomial Logistic Regression
Today I will teach you how to Conduct and Interpret a Multinomial Logistic Regression in SPSS What is Multinomial Logistic Regression? Multinomial Logistic Regression is the regression analysis to conduct when the dependent variable is nominal with more than two levels. Similar to multiple linear regression, the multinomial regression is a predictive analysis. Multinomial regression is […]
Understanding Three-way Interaction in ANOVA
Today i will teach you in Understanding Three-way Interaction in ANOVA Consider the three-way ANOVA, shown below, with a significant three-way interaction. There are 24 observations in this analysis. In this model a has two levels, b two levels and c has three levels. You will note the significant three-way interaction. Basically, a three-way interaction means that one, or more, two-way […]
Difference between One-tailed and Two-tailed Tests
Today, i will teach you about the Difference between One-tailed and Two-tailed Tests When you conduct a test of statistical significance, whether it is from a correlation, an ANOVA, a regression or some other kind of test, you are given a p-value somewhere in the output. If your test statistic is symmetrically distributed, you can […]
How to Interpret probability Value (P-value)
This video explains how to interpret probability Value, also kow an p-value NB: This video has been embeded under the persmission of Ron QS (Owner & Producer – Quantitative Specialists)
How to Calculate Percentiles in SPSS
This video explains how to Calculate Percentiles in SPSS. NB: This video has been embeded under the persmission of Ron QS (Owner & Producer – Quantitative Specialists)
Understanding Type I and Type II errors
Type I and Type II errors signify the erroneous outcomes of statistical hypothesis tests. Type I error represents the incorrect rejection of a valid null hypothesis whereas Type II error represents the incorrect retention of an invalid null hypothesis. Null Hypothesis Null Hypothesis refers to a statement which nullifies the contrary with evidence. Consider the […]
Types of sampling design in Research Methodology
There are different types of sampling designs based on two factors viz., the representation basis and the element selection technique. On the representation basis, the sample may be probability sampling or it may be non-probability sampling. Probability sampling is based on the concept of random selection, whereas non-probability sampling is ‘non-random’ sampling. On element selection […]
Normality using SPSS Statistics (Two or more independent variables)
Testing for Normality using SPSS Statistics Procedure when there are two or more independent variables The Explore… command on its own cannot separate the dependent variable into groups based on not one but two or more independent variables. However, we can perform this feat by using the Split File… command. Click Data > Split File… on the top menu as shown […]
Introduction to Mediation Analysis
Introduction to Mediation Analysis This post intends to introduce the basics of mediation analysis and does not explain statistical details. For details, please refer to the articles at the end of this post. What is mediation? Let’s say previous studies have suggested that higher grades predict higher happiness: X (grades) → Y (happiness). (This research […]
T-Distribution Table
The critical values of t-distribution are calculated according to the probabilities of two alpha values and the degrees of freedom. The Alpha (a) values 0.05 one tailed and 0.1 two tailed are the two columns to be compared with the degrees of freedom in the row of the table. One Tail 0.05 0.025 0.01 0.005 […]
