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Chapter 15. Using Regression to Track Tr... > Using Multiple Regression Analysis

Using Multiple Regression Analysis

Focusing on a single independent variable is a useful exercise because it can tell you a great deal about the relationship between the independent variable and the dependent variable. However, in the real world of business, the variation that you see in most phenomena is a product of multiple influences. The movement of car sales isn't solely a function of interest rates; it's also affected by internal factors such as price, advertising, warranties, and factory-dealer incentives, as well as external factors such as total consumer disposable income and the employment rate.

The good news is that the linear regression techniques you learned earlier in this chapter are easily adapted to multiple independent variables.


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