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A Step-by-Step Approach to Using SAS® for Univariate & Multivariate Statistics, Second Edition by Edward J. Stepanksi Ph.d., Larry Hatcher, Norm O'Rourke

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Example with a Nonsignificant Interaction

To illustrate how a two-way ANOVA is performed, let’s modify the earlier study that examined the effect of rewards on commitment in romantic relationships. In Chapter 9, “One-Way ANOVA with One Between-Subjects Factor,” only one independent variable was manipulated, and this variable was called “type of rewards.” In this chapter, however, there are two independent variables: independent variable A will be “type of rewards” while independent variable B will be “type of costs.”

In the study presented in Chapter 9, participants read descriptions of a fictitious “partner 10” and rated how committed they would be to a relationship with that person. One independent variable (called “type of rewards”) was manipulated, ...

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