Author: Will
Logistic Regression in SPSS
This tutorial shows how you can do logistic regression in SPSS step by step. Logistic regression is a model testing the relationship between Y (which is a binary variable) and X (X can be more than one). logistic regression is also called logit...
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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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Understanding Interaction Effects in Data Analysis
This tutorial introduces the basic idea of interaction effects in data analysis. This tutorial includes what an interaction effect is, example of an interaction effect, and the statistical methods to do the analysis. 1. What are interaction effects? (The definition)...
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Select Variables and Save as a New File in SPSS
This tutorial shows how you can select variables and save them as a new file in SPSS (i.e., subset data file). The easiest way is to use SPSS syntax to indicate which variables you want to select and where you...
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Plot Interaction Effects of Categorical Variables in SPSS
This tutorial shows how you can plot interactions of categorical variables in SPSS. That is, the 2 independent variables (IVs) are categorical variables and the dependent variable is numerical. Since both of the IVs (City and Brand, see the figure...
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How to Create Scatter Plots in SPSS
This tutorial shows how you can create scatter plots in SPSS in 5 steps. In addition, it shows how to add a fit line in SPSS. Note that, the tutorial is based on SPSS 31; if you are using a...
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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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SPSS Measure: Nominal, Ordinal, and Scale
This tutorial provides definitions and examples for the 3 SPSS measures, including nominal, ordinal, and scale. 1. Definitions for Nominal, Ordinal, and Scale Nominal Data Variables at the nominal level are categorical and have no inherent order or numerical meaning....
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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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