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Revision as of 20:10, 10 June 2014
RGA_Reference_Examples_Banner.png
This example compares the results for test-fix-test data (failure terminated).
Reference Case
International Standard IEC 61164 (Reliability Growth in Product Design and Test – Statistical Test and Estimation Methods), Example 1 – Case 2, pg. 30.
Data
| 2
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| 4
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| 10
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| 15
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| 18
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| 19
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| 20
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| 25
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| 39
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| 41
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| 43
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| 45
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| 47
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| 66
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| 88
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| 97
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| 104
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| 105
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| 120
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| 196
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| 217
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| 219
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| 257
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| 260
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| 281
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| 283
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| 289
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| 307
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| 329
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| 357
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| 372
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| 374
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| 393
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| 403
|
| 466
|
| 521
|
| 556
|
| 571
|
| 621
|
| 628
|
| 642
|
| 684
|
| 732
|
| 735
|
| 754
|
| 792
|
| 803
|
| 805
|
| 832
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| 836
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| 873
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| 975
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Termination Time = 975 hours
Result
Beta (UnB) = 0.5594, Lambda = 1.1067
CL = 0.9 (two-sided confidence bounds on DMTBF
DMTBFUpper = 46.7 hours
DMTBF = 33.5 hours
DMTBFLower = 24.3 hours
CVM = 0.041, critical value = 0.173. Since CVM < critical value can fail to reject hypothesis that the model fits the data.
Results in RGA
Confidence bounds in QCP are calculated using Crow Bounds methodology.
