Stat 567:Statistical Reliability
Twenty Second Class (December 1, 1997)
Weibull Anova
Class Objectives:
- Show how ignoring sources of variation can be misleading in reliability
data analysis
- Demonstrate how to handle categorical variable in Weibull regression
Homework Assignments:
Class Outline and Main Points:
- Gerstle and Kunz
(1983) Example
- Analysis without considering spool effect
- MLEs
- Residual plot versus spool
- Analysis considering spool effect
- Likelihood ratio test for spool effect
Study Questions
- Why is it important to consider important sources of variation in reliability
data analysis?
- Why the spool effects obtained with JMP are different from the ones
obtained in the book?
Do
you have something to tell me?