Add Regression Fit
overview     how to      see also 

Editor > Add > Regression Fit

Use to add a least squares regression line to an active scatterplot or matrix plot. Use the regression fit to examine the relationship between the response variable (y) and the predictor variable (x). If you hover the mouse pointer over the fitted line, Minitab displays the fitted regression equation. After creating a graph, you can change the model order for the regression fit, add groups, or change the fitted line attributes (see Editing Data Fits Overview).

Dialog box items

Model Order

Linear: Choose to fit a linear model.

Quadratic: Choose to fit a quadratic model.

Cubic: Choose to fit a cubic model.

Fit intercept: Check to fit a constant term (the y-intercept of the regression line). Uncheck to fit the model without a constant term.

Apply same groups of current displays to regression fit: Check to use the same grouping variables for the fitted line as are used for all other data displays.