Go to the Data Display tab and uncheck Show confidence intervals. on the main dialog box (next to the Scale. If you want to get rid of the confidence interval curves, go to Distribution. Hit the OK button to return to the main dialog and then OK again to get the graph.In the Scale dialog box, go to the Y-Scale Type tab and choose Score.In the Scale dialog box, check the Transpose X and Y option on the front Axes and Ticks tab.In the dialog box, set up your desired graph variable.Hit OK for the default choice of Single.
Here's steps you can take to have Minitab produce a plot in the same style as the text: If most of the points fall within thecurves with a non-systematic scatter, assuming normality is probably fine. To create a probability plot, choose Graph > Probability Plot and double click on a variable to enter it into the Variables box. You can use these inmaking a judgment about normality. You don't need to worry about the precisemeaning of the 95% confidence interval curves. With the text's choices, granularity will show up aspoints lined up horizontally. With the Minitab default, granularity will show up as points linedup vertically. The central question remains the same: Towhat degree do the points fall along a straight line? The more the pointsfall along the line, the more closer the distribution is to being normal.
The default format forprobability plots in Minitab differs from what the text uses in three ways: NQ Plots in Minitab Producing normal quantile plots in Minitab.Ī Probability Plot in Minitab serves the same purpose as a normalquantile plot as described in the text. To create a QQ-plot (quantile-quantile or normal probability plot), select Graph > Probability Plot, choose Simple, and move Price into the Graph.
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