Quality and Reliability Methods - SAS

Chapter 15 Recurrence Analysis 269
Examples
Figure 15.7 MCF Differences
To determine whether there is a statistically significant difference between treatments, examine the
confidence limits on the differences plot. If the limits do not include zero, the treatments are convincingly
different. The graphs in Figure 15.7 show there is no significant difference among the treatments.
Diesel Ship Engines Example
The sample data table Diesel Ship Engines.jmp contains data on engine repair times for two ships
(Grampus4 and Halfbeak4) that have been in service for an extended period of time. See Meeker and
Escobar (1998). You want to examine the progression of repairs and gain a sense of how often repairs might
need to be done in the future. These observations can help you decide when an engine should be taken out
of service.