Overview of Estimation Test Plan

Use Estimation Test Plan to determine the number of test units that you need to estimate percentiles or reliability values with a specified degree of precision.

An estimation test plan can be used to answer questions such as:

How many units should be tested to estimate the 10th percentile with a 95% lower confidence bound within 100 hours of the estimate?
How many cables does an engineer need to test until failure to predict the survival probability of the cables at a force of 5000 pounds?

An estimation test plan is performed before collecting reliability data and requires prior information about the distribution of the data.

Where to find this analysis

To create an estimation test plan, choose Stat > Reliability/Survival > Test Plans > Estimation.

When to use an alternate analysis

To create a plan for a demonstration test, use Demonstration Test Plan.
To create a plan for an accelerated life test, use Accelerated Life Test Plan.