Minimum Data Requirements - Discrete Data
For reliability growth data analysis only.
The minimum data requirements for analysis of developmental discrete data are presented next:
|
Data Type |
Minimum Requirements |
Models |
|
Sequential |
At least 3 reliability points (this is not equal to the number of data points or failures). |
Crow-AMSAA, Standard Gompertz, Lloyd-Lipow, Duane, Logistic |
|
At least 4 reliability points |
Modified Gompertz |
|
|
Sequential with Mode |
At least 3 reliability points (this is not equal to the number of data points or failures). |
Standard Gompertz, Lloyd-Lipow, Logistic |
|
At least 4 reliability points |
Modified Gompertz |
|
|
Grouped per Configuration |
At least 3 data entries (configurations). |
Crow-AMSAA, Standard Gompertz, Lloyd-Lipow, Duane, Logistic |
|
At least 4 reliability points. |
Modified Gompertz |
|
|
Mixed Data |
At least 3 intervals with at least one failure in each. |
Crow-AMSAA |
|
Number of failures in the first interval must be less than the number of units in the interval. |
Crow Extended: |