Suggested answer to exercise: Transformations, 3

Question 3: What is meant by a two sample t test and what assumptions about the data does it require?

Suggested answer

The two sample t test is a statistical technique used when we wish to compare the means of two independent groups. The method requires that the data come from Normal distributions in each population and that the variance is the same in both populations.

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Last updated: 27 July, 2009.