# Running t-Tests in SPSS

Nikki Kamouneh

Posted on
t distribution t test SPSS

# t-Tests in SPSS

SPSS allows you to conduct one-sample, independent samples, and paired samples $$t$$-tests. This page demonstrates how to perform each using SPSS. The data used in this tutorial can be downloaded from this GitHub repository. The one-sample and independent samples examples will use the iq_long.sav data, and the paired samples example will use iq_wide.sav.

## One Sample $$t$$-Test

Say we have data from 200 subjects who have taken an IQ test. We know in the general population the mean IQ is 100. We want to test the hypothesis that our sample comes from a different population, e.g. one that is more gifted than the general population. We will test the null hypothesis that our sample comes from a population where $$\mu \ne 100$$. In SPSS, we click on Analyze $$\rightarrow$$ Compare Means $$\rightarrow$$ One-Sample T Test.