Response

Mary, a colleague of yours, wants to test the effectiveness of a new lesson plan on two different groups of students. She wants to perform a t-test, but she is not sure whether to use a related measures, a matched subjects, or an independent samples t-test. Base on the information provided, how would you advise your colleague? If she asked you to analyze the data in SPSS for her, describe the steps in SPSS to do so?