CHAPTER 9
Regression Analysis
An Overview of Regression Analysis
AT ITS MOST BASIC LEVEL, regression analysis is a statistical technique for developing an equation that describes the relationship between two or more variables.1 This equation generally takes the form of:
Y = a + b1x2 + b2x2 + . . . bnxn.
The following variables are represented in the equation:
Y equals the dependent variable.
xn equals the independent variables; the parameters used to predict y.
a equals the value of y when all independent variables are zero.
b1 equals the regression coefficient that indicates the impact that the independent variables have on the dependent variable.
One variable, the dependent variable, is the variable that you are trying to understand. The ...
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