Example 151 Tech: A group of undergraduate biology majors were randomly assigned to one of four GRE test prep strategies, and their post-prep GRE exam scores for the quantitative reasoning portion of the GRE were recorded. The first group participated in a Kaplan’s GRE preparation course. The second group participated in a Test Masters GRE preparation course. The third group enrolled in a self-paced GRE prep course online, and the last group studied on their own without participating in a prep course. All of the students in the study had taken the GRE once before the experiment began. There was no significant difference between their previous GRE scores on the quantitative reasoning section. The GRE scores on the quantitative reasoning portion of the test for the four groups are included below along with part of the output from a statistical software package called SPSS. Fill in the missing parts of the ANOVA table, and answer the set of questions that follow.

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Example 151tech

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