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Mr. Gregory White
Mr. Gregory White, Master's Degree
Category: Calculus and Above
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Experience:  M.A., M.S. Education / Educational Administration
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when would a researcher use a t-test of independent means?

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when would a researcher use a t-test of independent means? provide an example.
Submitted: 4 years ago.
Category: Calculus and Above
Expert:  Mr. Gregory White replied 4 years ago.
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A researcher is going to use a t-test when they are wanting to test whether two statistical means, or proportions, are equal. They are wanting to compare the two means or proportions.

For example, a researcher might want to look at whether people who are allowed to sleep for only four hours will cause their scores on a certain standardized test will be significantly lower than those were were allowed to sleep for a full eight hours. The two groups would be scored and the means of the two groups would be compared using a t-test.
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