![]() Standardized test results of a group of students before and after a study prep course.Body temperature using two different thermometers on the same group of participants.The before and after effect of a pharmaceutical treatment on the same group of people.Some examples of instances for which a paired t-test is appropriate include: Paired t-tests are used when the same item or group is tested twice, which is known as a repeated measures t-test. The independent variables must consist of two related groups or matched pairs.The dependent variable is measured on an incremental level, such as ratios or intervals. ![]()
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