7 Independent T-Tests
Activity 6
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 [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] .