After you create a relation plot, you can change the percentiles and some of the display options. Right-click the graph, then choose Edit
Graph. Double-click a function line and click the Options tab.
Plot percentiles for percents
Enter the percents for which you want to plot the percentiles. Then, indicate how you want Minitab to display the confidence intervals for the percentiles on the plot.
Display confidence intervals for middle percentile
Display confidence intervals for all percentiles
Display no confidence intervals
Display failure times on plot
Show the points for the failure times (the exact failure time or the midpoint of interval for interval-censored observation) on the plot.