1 Choose Graph > Line Plot > Without Symbols, One Y > OK.
2 Under Without Symbols, choose One Y. Click OK.
3 From Function, choose a function.
4 In Graph variables, enter one or more columns of response data. Minitab displays a separate graph for each column.
5 In Categorical variable for X-scale grouping, enter the grouping variable to be represented on the x-scale.
6 In Categorical variable for legend grouping, enter the grouping variable to be represented in the legend.
7 If you like, use any dialog box options, then click OK.