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Figure  .25 Example of a Variability Chart
This example uses the Popcorn.jmp data table with data from a popcorn maker. The yield (the volume of popcorn for a given measure of kernels) was measured for each combination of popcorn style, batch size, and amount of oil used.
1.
Select Help > Sample Data Library and open Popcorn.jmp.
2.
Select Analyze > Quality and Process > Variability/Attribute Gauge Chart.
3.
Select yield and click Y, Response.
4.
Select popcorn and click X, Grouping.
5.
Select batch and click X, Grouping.
6.
Select oil amt and click X, Grouping.
Note: The order in which you assign the variables to the X, Grouping role is important, because the order in this window determines their nesting order in the variability chart.
Figure  .26 Variability Chart Window
7.
8.
Deselect Std Dev Chart on the red triangle menu.
Figure  .27 Results Window

Help created on 3/19/2020