# Topic 8 Multiple Regression

• Multiple regression extends simple linear regression with more than one (1) predictor variables
• We have one response variable and multiple independent predictor variable.

$$$y_{i}=\alpha+\beta_{1}x_{1}+\beta_{2}x_{2}+\ldots+\varepsilon_{i} \tag{8.1}$$$

• The estimation process is similar to the univariate case where the additional predictors are added with + operator
• A multifactor example demonstrates in the next section