Statistics testing : analyzing the RB-2 design by ClassOf1


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									              Sub: Statistics                                                                                  Topic: Testing

              Using SPSS GLM, analyze the data as an RB-2 design and give the syntax,
              conclusions and interpretation for the test.

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              HUDM 5123 Lab 1: Dependent groups t-test (RB-2 design)

              This lab asks you to analyze a simple matched-groups design in two ways: using the dependent
              groups’t test, and analyzing the same data as a randomized blocks design with p=2 levels of the
              within-subjects factor (using SPSS’s GLM procedure).

              In this study, the researcher is studying the effect of participation in an afterschool program on
              problem behaviors (e.g. smoking, risky sex) in teens. Because participants in the program are
              volunteers, rather than being randomly assigned to conditions, the group of participating teens
              differs in a number of ways from non-participants most importantly in a composite measure of
              “social/academic risk.” The researcher decides to try to control for group differences by
              matching pairs of students, one participant with one non-participant, with similar risk scores.
              Fifteen matched pairs of students are created, so the total number of students followed is
              N=30. After three months of program, the scores of participants and non-participants are
              compared (the dependent variable is a composite 
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