May 2016
Beginner to intermediate
368 pages
11h 41m
English
Content preview from Regression Analysis Microsoft® Excel®
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7. Using Regression to Test Differences Between Group Means
In This Chapter
This is a book about regression analysis. Nevertheless, I’m going to start this chapter by discussing different scales of measurement. When you use regression analysis, your predicted (or outcome, or dependent) variable is nearly always measured on an interval or ratio scale, one whose values are numeric quantities. Your predictor (or independent, or regressor) variables are also frequently measured on such numeric scales.
However, the predictor variables can also represent nominal or category scales. Because functions such as Excel’s ...
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