Minitab estimates the probability (P) that is used to calculate the plot points using the following methods.
- Median rank (Benard's method)
- Mean Rank (Herd-Johnson estimate)
- Modified Kaplan-Meier (Hazen)
- Kaplan-Meier product limit estimate
|n||Number of observations|
|i||Rank of the ith ordered observation x(i), where x(1), x(2),...x(n) are the order statistics, or the data ordered from smallest to largest|