1.
Select Help > Sample Data Library and open Quality Control/Diameter.jmp.
2.
Select Analyze > Quality and Process > Control Chart Builder.
3.
Drag DIAMETER to the Y role.
4.
Drag DAY to the Subgroup role (at bottom).
Figure 2.13 Control Charts for Diameter
5.
Drag Phase to the Phase role.
6.
In the Average chart, right-click and select Warnings > Test Beyond Limits.
Figure 2.14 Control Charts for each Phase
Including the Phase variable means that the control limits for phase 2 are based only on the data for phase 2. None of the phase 2 observations are outside the control limits. Therefore, you can conclude that the process is in control after the adjustments were made.
1.
Starting from Figure 2.14, double-click in the X axis.
2.
Select Allow Ranges.
3.
Enter -0.5 for the Min Value (the scale minimum).
4.
Enter 19.5 for the Max Value (the dividing line).
6.
Click Add.
7.
Click Allow Ranges.
8.
Enter 19.5 for the Min Value (the dividing line).
9.
Enter 39.5 for the Max Value (the maximum of the axis).
11.
Click Add.
12.
Figure 2.15 Diameter Phases with Color

Help created on 7/12/2018