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OCR: Paired t-test The paired t-test tests that the mean of the two variables is the same It is equivalent to constructing column of differences between two columns of paired measurements and te that the mean of that column C zero as the Distribution of platform The Paired t-Test table lists the following statistics which are appropriate for testing that two paired variable have the same mean: Mean difference shows the mean of the difference between the two sample means. The Student's T test assumes that the distribution is normal Std Err shows the standard error of the difference of the means. Ratio is the Mean Difference divided by the Std Err. The Student 'st test assumes the distribution of the sample difference IS normal. DF shows the degrees of freedom used for the test, which is the numb ...