Nelson (1982) discusses the failure times of a small electrical appliance that has a number of causes of failure. One group (Group 2) of the data is represented in the JMP sample data table Appliance.jmp.
1.
Select Help > Sample Data Library and open Reliability/Appliance.jmp.
2.
Select Analyze > Reliability and Survival > Survival.
3.
Select Time Cycles and click Y, Time to Event.
4.
6.
Click Cause Code, and click OK.
Figure 12.11 Competing Causes Report and Hazard Plot
Figure 12.12 shows the Fit Y by X plot of Time Cycles by Cause Code with the Quantiles option in effect. This plot further illustrates how the alphas and betas relate to the failure distribution.
Figure 12.12 Fit Y by X Plot of Time Cycles by Cause Code
Figure 12.13 shows the survival plots with all competing causes and without cause 9. You can see that the survival rate (represented by the dashed line) without cause 9 does not improve much until 2,000 cycles, but then becomes much better and remains improved, even after 10,000 cycles.
Figure 12.13 Survival Plots with Omitted Causes

Help created on 7/12/2018