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	Minimum Data Requirements

Minimum Data Requirements - Change of Slope Calculations

Change of Slope calculations require at least 3 failures up to the break point and at least 2 failures after the break point. Therefore, there must be at least 5 total failures or intervals (in grouped data) to conduct the analysis.

Change of Slope calculations are available only for developmental testing data using Crow-AMSAA, for the following data types:

• Failure Times

• Grouped Failure Times

• Known Operating Times

• Concurrent Operating Times

• Multiple Systems with Dates

• Mixed