Whats the first thing you would do - compare the initial test scores for the two groups using a t-test for two samples (with unknown variances)?

- Thread starter galegirly
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Whats the first thing you would do - compare the initial test scores for the two groups using a t-test for two samples (with unknown variances)?

What to do depends on the particular topic of your research, the nature of the measurements taken, and on your research question.

With kind regards

K.

The data is from a standardised test. This test is a little different from your usual psychometric, possible test scores run from 0 to 20, the standardised population average is 10. there are a number of domains within the test, I have tested the children on five of these, before and after intervention - so I have 10 data points for each child involved. So what do you think, would you start with the t-test?

It's also possible to address the question with a multilevel/mixed model.