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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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Introduction: The Basics of One-Way ANOVA, Between-Subjects Design

One-way analysis of variance (ANOVA) is appropriate when an analysis involves:

  • a single predictor variable that is measured on a nominal scale and can assume two or more values;

  • a single criterion variable that is measured on an interval or ratio scale.

In Chapter 8, “t Tests: Independent Samples and Paired Samples,” you learned about the independent samples t test, which you can use to determine whether there is a significant difference between two groups with regard to their respective scores on an interval- or ratio-scale criterion variable. But what if you are conducting a study in which you must compare more than just two groups? In those situations, it is often appropriate ...

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