Paired t-Test: Theory and Excel Calculation

The video tutorial explains the theory and application of the dependent or paired T test, contrasting it with the independent T test. It provides criteria for when to use a paired T test, including examples such as measuring variables before and after an intervention. The tutorial outlines the requirements for conducting a dependent T test, such as having the same number of values for each variable. It also offers a step-by-step guide to performing the test in Excel, including setting up data and interpreting results, emphasizing the importance of reporting mean, standard deviation, and P values.

What is the null hypothesis in the context of a paired T-test?

How do you interpret the P-value obtained from a paired T-test?

What are the implications of using a one-tailed versus a two-tailed test in a paired T-test?

Summarize the key points to remember when performing a paired T-test.