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This edition: One-Way ANOVA





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Episode Details

The video program for this lesson explains how to evaluate whether or not there are differences in the means of three or more groups. The program expands upon previous lessons that dealt with the testing of sample means, and demonstrates how the F test, previously applied to multiple regression, can be used to evaluate the means of multiple groups through a new procedure called the analysis of variance (ANOVA). The use of ANOVA is introduced through two real life examples. In each, researchers want to test the null hypothesis that the means of multiple groups are equal. The alternative hypothesis is, of course, more interesting: that the mean of at least one of the groups is different. The case studies also reveal the conditions under which ANOVA can be used.

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