To illustrate what we mean we use the data of Watson, A. S. and Smith, R. L. (1985) on the failure stresses of single carbon fiber. (Table 4.1, Page 81 of your textbook). Notice that in this example failure stress plays the role of time.
Open the buttons 1, 10, 20, 50. For example below we have the 10 button:
From these tables we can built by inspection the following JMP table:
For each Fraction, the columns Quatile1, Quatile10, Quatile20, Quatile50 are the quantiles at the different lengths (loads). The last column, Ave. Quantile, was obtained using JMP's calculator and is the average of the four quantiles in that row.
Notice that we have selected a log scale for both X and Y.
If the assumption of an Accerated Life Model are satisfied these lines should
be parallel with slope 1. What do you think?
