03 Constructing Probability Plots

Module 3 Assessing & Selecting Models for Time-to-Failure Data

Lesson M03-03

Text: Section 5  pages 5 – 15

Duration: 18 minutes

Now that we are familiar with the purpose and interpretation of probability plots, we dig a bit deeper to understand why and how they actually work.  Through an example, we see that the probability plot is simply a transformed (linearized) cumulative failure probability function that allows us to view significant departures of the data from an assumed model.  We also look at how probability plots may be constructed without the use of statistical software.