# 7 Independent T-Tests

## Activity 6

0h 20m

This activity introduces the independent t-test – a powerful test to use when you are comparing two groups or conditions. There are two variants of the t-test:

- independent t-test;

- paired samples t-tests.

The independent t-test is used when you have two groups of individuals or cases. For example:

- male versus female;

- experimental versus control group.

Data files are set up differently according to which t-test is chosen. In addition there are separate menus in SPSS for each type of t-test. Finally, each t-test will produce different outputs.

### Hint

For an independent t-test the data file should have at least two columns – one for the independent variable and one for the dependent variable.

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You can download this SPSS file from this tutorial here.

OpenLearn - Getting started with SPSS
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