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When is it appropriate to use the t test?

  • Thread starter sara_87
  • Start date
763
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1. Homework Statement

If i have data and want to compare the two means, when is it appropriate to use the t test?

3. The Attempt at a Solution

i know its because the distribution is normal but there are also other reasons.
Thank you.
 

Answers and Replies

308
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the t-test is used when the sample size is "small" less than 30 and the underlying distribution is normal.
 

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