Quality and Reliability Methods - SAS

Chapter 14 Lifetime Distribution II 247
Navigating the Fit Life by X Report Window
Figure 14.8 Distribution Profiler
Comparable results are obtained for the Quantile, Hazard, and Density tabs. The Distribution, Quantile,
Hazard, Density, and Acceleration Factor Profilers behave similarly to the Prediction Profiler in other
platforms. For example, the vertical lines of Temp and Hours can be dragged to see how each of the
distribution values change with temperature and time. For a detailed explanation of the Prediction Profiler,
see the Modeling and Multivariate Methods book.
Understanding the Acceleration Factor
Clicking the Acceleration Factor tab displays the Acceleration Factor Profiler for the time-to-event variable
for each specified distribution. To produce Figure 14.9, the Fit All Distributions option is selected from the
red-triangle menu in the Fit Life by X outline title. Modify the baseline value for the explanatory variable by
selecting Set Time Acceleration Baseline from the red-triangle menu of the Fit Life by X outline title and
entering the desired value. Figure 14.9 shows the Acceleration Factor Profiler for each distribution.