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Mathematics
Max Mcgrath
21 September, 14:30
How to differentiate t tests
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Lover
21 September, 15:03
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A t-test is used for testing the mean of one population against a standard or comparing the means of two populations if you do not know the populations' standard deviation and when you have a limited sample (n < 30). If you know the populations' standard deviation, you may use a z-test
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