You can graph a subset (or portion) of the data in the worksheet, without altering the worksheet itself. For example, if data contain outliers, you can omit these potentially distracting points from your graph without deleting them.
Minitab automatically rescales the graph based on the subset of data points you specified.
To specify a subset of data to use when you create a graph, click Data Options. On the Subset tab, select whether to include or exclude the specified observations on your graph.
For example, if C1 contains dates and you want to exclude rows that contain dates between 1/3/2016 and 1/7/2016, enter C1>Date("1/3/2016") and C1<Date("1/7/2016").
Include or exclude rows that are currently brushed (usually outliers).
Enter the row numbers to include or exclude. Use a colon (:) to denote an inclusive range. For example, enter 1 4 6:10 to signify the rows 1, 4, 6, 7, 8, 9, 10. Use a slash (/) to denote increments. For example, enter 1:30/2 to signify all the odd number rows from 1 to 29.
Leave gaps for excluded points
If you are creating a time series plot or a control chart, you can select this option to leave a space in the graph for the points that you exclude.
For control charts, Minitab treats the excluded points as missing values in the calculations for control limits. If you don't select this option, then Minitab omits the entire rows that contain excluded points from the calculations for control limits.