step  To run a linear regression analysis, from the menus choose:

Analyze
  Regression
   Linear...

step  Select Log-transformed sales as the dependent variable.

The distribution of Log-transformed sales is closer to normal than Sales in thousands, and the linear regression model works better with normal variables.

step  Select Vehicle type through Fuel efficiency as independent variables.

step  Click Statistics.

step  Select Part and partial correlations and Collinearity diagnostics.

step  Click Continue.

step  Click OK in the Linear Regression dialog box.