In the Devalt.jmp data, units are stressed by heating, in order to make them fail soon enough to obtain enough failures to fit the distribution.
Note: The data in Devalt.jmp comes from Meeker and Escobar (1998, p. 493).
1.
Select Help > Sample Data Library and open Reliability/Devalt.jmp.
2.
Select Analyze > Fit Y by X.
3.
Select Hours and click Y, Response.
4.
Select Temp and click X, Factor.
5.
Figure 13.7 Bivariate Plot of Hours by Log Temp
6.
Select Analyze > Reliability and Survival > Survival.
7.
Select Hours and click Y, Time to Event.
8.
Select Censor and click Censor.
9.
Select Temp and click Grouping.
10.
Select Weight and click Freq.
11.
12.
From the red triangle menu, select LogNormal Plot and LogNormal Fit.
13.
Figure 13.8 Lognormal Plot
14.
Select Analyze > Reliability and Survival > Fit Parametric Survival.
15.
Select Hours and click Time to Event.
16.
Select x and click Add.
17.
Select Censor and click Censor.
18.
Select Weight and click Freq.
19.
Change the Distribution type to Lognormal.
20.
Click Run.
Figure 13.9 Devalt Parametric Output
21.
From the red triangle menu, select Estimate Survival Probability.
22.
Enter the values shown in Figure 13.10 into the Dialog to Estimate Survival.
Figure 13.10 Estimating Survival Probabilities
23.
Figure 13.11 Survival Probabilities

Help created on 7/12/2018