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T-test

Requires that the samples are normally distributed. Select the type of test depending on if the samples are independent or paired, and if sample variances are equal or not. You can test for equal variances using the F-test for equal variances. The Shapiro-Wilk Expanded test can be used to check if samples are normally distributed.
 
Tests the hypotheses:
H0 There is no difference between the means of the samples  
H1 (two-tailed) The mean of sample A is different than the mean of sample B  
H1 (one-tailed) The mean of sample A is either less than or greater than the mean of sample B  

 Test Type


 Independent, equal variances    Independent, unequal variances    Paired

 Data Entry


Sample A:
Sample B:
Significance level α: 
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