Grouped Data Reference Example
 |
New format available! This reference is now available in a new format that offers faster page load, improved display for calculations and images and more targeted search.
As of January 2024, this Reliawiki page will not continue to be updated. Please update all links and bookmarks to the latest references at RGA examples and RGA reference examples.
This example compares the results for grouped data.
Reference Case
MIL-HDBK -189A, Section 6.3.1.7.5, pg. 162, 2009.
Data
| Termination Time = 100 hours | |
|---|---|
| Failures in Interval | Interval End Time |
| 13 | 20 |
| 16 | 40 |
| 5 | 60 |
| 8 | 80 |
| 7 | 100 |
Result
Beta = 0.753, Lambda = 1.53
DMTBF = 2.6 hours
[math]\displaystyle{ \,\!X^{2} }[/math] = 5.5, critical value = 7.8 (Assume significance level = 0.1. Since [math]\displaystyle{ \,\!X^{2} }[/math] < critical value can fail to reject hypothesis that the Crow-AMSAA model fits the data).
Results in Weibull++
