Business Statistics

526 Business Statistics

The technique described above is an indirect technique of finding the output for the quadratic regres-

sion model. Minitab also presents the direct technique of obtaining the output of the quadratic regres-

sion model. To use the direct method, click Stat/Regression/Fitted Line Plot. The Fitted Line Plot

dialog box will appear on the screen. Place the dependent variable in the Response (Y) box and the

independent variables in the Predictor (X) box. The Fitted Line Plot dialog box offers three options

“Linear,” “Quadratic,” and “Cubic” in the Type of Regression Model box. To obtain Quadratic

regression model, select