Data Analysis with Microsoft Excel: Updated for Office 2007

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Chapter 10

ANALYSIS OF VARIANCE

Objectives

In this chapter you will learn to:

Compare several groups graphically

Compare the means of several groups using analysis of variance

Correct for multiple comparisons using the Bonferroni test

Find which pairs of means differ signifi cantly

Compare analysis of variance to regression analysis

Perform a two-way analysis of variance

Create and interpret an interaction plot

Check the validity of assumptions

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