Select y-scale > Editor > Edit Scale > Type
Use to choose the y-scale type of a histogram. By default, Minitab displays a frequency scale for histogram.
Scale Type
Frequency: Choose to use a frequency scale.
Percent: Choose to use a percent scale.
Density: Choose to use a density scale.
Accumulate values across bins: Check to accumulate values from left to right with each bar. This option cannot be used with the Density option.
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