SPSS TUTORIALS FULL COURSE BASICS ANOVA REGRESSION FACTOR

# SPSS T-Test Tutorials

## Independent Samples T-Test

### SPSS Independent Samples T-Test

A very complete and up-to-date tutorial on running and interpreting t-tests in SPSS. Includes:

• Assumptions
• Understanding the SPSS Output
• Effect Size (Cohen’s D)
• APA Style Reporting

### Independent Samples T-Test – Quick Introduction

An independent samples t-test examines if 2 populations have equal means on some variable.

Example: do Dutch women have the same mean salary as Dutch men?

This tutorial quickly walks you through the basics such as the assumptions, null hypothesis and effect size for this test.

## Paired Samples T-Test

### SPSS Paired Samples T-Test Tutorial

A paired samples t-test examines if 2 variables have equal means in some population.

Example: were the mean salaries over 2018 and 2019 equal for all Dutch citizens?

This tutorial quickly walks you through the correct steps for running this test in SPSS.

## One Sample T-Test

### One-Sample T-Test – Quick Tutorial & Example

A one-sample t-test examines if a population mean is likely to be x: some hypothesized value.

Example: do the pupils from my school have a mean IQ score of 100?

This tutorial quickly walks you through the basics for this test, including assumptions, formulas and effect size.

### SPSS One Sample T-Test Tutorial

How to run a one sample t-test correctly in SPSS?

This simple tutorial with downloadable practice data quickly walks you through the right steps!

## T-Test Background Tutorials

### Cohen’s D – Effect Size for T-Test

Cohen’s D is the effect size measure of choice for t-tests.

This simple tutorial quickly walks you through

• rules of thumb for small, medium and large effects;
• formulas for computing Cohen’s D and;
• software options for obtaining it.

### Z-Scores – What and Why?

Z-scores are scores that have mean = 0 and standard deviation = 1.

All scores can be standardized into z-scores by subtracting the mean from each score and then dividing it by the standard deviation.

Such standardized scores may be easier to interpret than the original scores. Z-scores may or may not be normally distributed.

### What is a Dichotomous Variable?

Dichotomous variables are variables that hold precisely two distinct values.

Example: sex can only be male or female.

Some analyses that are only suitable for dichotomous variables are

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# THIS TUTORIAL HAS 13 COMMENTS:

• ### By Ruphus Irungu on October 8th, 2020

Great stuff. Tutorials well laid out. I need to learn SPSS soonest. Certification? Do you have a free software version albeit with limited applications?

Keep it up!

• ### By rohaan on May 12th, 2022

thanks for this nice tutorials