Category: Statistics
How to Add Label Values via SPSS Syntax
This tutorial shows how to add label values via SPSS syntax. Such label values can tell readers what these numbers actually represent. In SPSS, you can use the menu to add label values (see the window below). However, you can...
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Two-Way ANOVA in SPSS
This tutorial shows the steps of how you can do two-way ANOVA in SPSS. A two-way ANOVA is used to estimate how a quantitative variable (i.e., Y) changes according to the levels of two categorical variables (X1 and X2). This tutorial uses...
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One-Way ANOVA in SPSS
This tutorial shows steps of how you can do One-Way ANOVA in SPSS. One-way ANOVA compares the means of two or more independent groups to determine whether the means are significantly different. We are going to test whether students of...
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One Sample t-test in SPSS
This tutorial shows how you can do one sample t-test in SPSS. One sample t-test is to compare a sample to a fixed value. For instance, you can compare whether the average score of students’ reading is different from 45....
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Johnson Neyman in SPSS (4 steps)
This tutorial explains what the Johnson Neyman technique is, when you can use the Johnson Neyman technique, and how you can do Johnson Neyman in SPSS. What is the Johnson Neyman technique? The Johnson Neyman technique is used for interaction...
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Interaction between Categorical and Continuous Variables in SPSS
This tutorial is to show how to do a linear regression for the interaction between categorical and continuous variables in SPSS. We are going to use the dataset called hsbdemo, and this dataset has been used in some other tutorials...
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Correlation Analysis in SPSS
This tutorial shows how you can do correlation analysis in SPSS. Correlation is a statistical measure of the relationship between two variables, X and Y. The typical situation of using correlation analysis is when both X and Y are continuous...
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Probability Density Functions in R (Examples)
The tutorial shows examples of how you can use built-in Probability Density Functions (PDF) in R, including PDF for normal distribution (dnorm), uniform distribution (dunif), and exponential distribution (dexp). Example 1: PDF for Normal Distribution Normal distribution PDF dnorm() in...
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Probability Density Function: Definition and Examples
This post discusses about the basic idea of probability density function, including definition and examples.
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How to Interpret Interaction Effects in Linear Regression (4 Steps)
This tutorial shows how to interpret interaction effects in linear regression models. In summary, there are two perspectives, (a) mean difference perspective and (b) slope difference perspective. Interpret Interaction Effect in Linear Regression (a) Mean Difference Perspective: One way to...
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