The purpose of the test is to determine whether there is statistical evidence that the mean difference between paired observations is significantly different from zero. Measurements taken from two halves or sides of a subject or experimental unit (e.g., measuring hearing loss in a subject's left and right ears).A measurement taken under two different conditions (e.g., completing a test under a "control" condition and an "experimental" condition).A measurement taken at two different times (e.g., pre-test and post-test score with an intervention administered between the two time points).These "paired" measurements can represent things like: ![]() The Paired Samples t Test compares the means of two measurements taken from the same individual, object, or related units.
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