Wilcoxon Inter-Well
Wilcoxon Non-Parametric Analysis
Inter-Well Comparison
Other Non-Parametric Tests:
Wilcoxon Intra-Well Comparison
Non-Parametric Prediction Limits
Non-Parametric Tolerance Limits
Description:
The Wilcoxon Rank-Sum method is a non-parametric Analysis of variance for comparing a selected compliance well to the background well.
At least four measurements are recommended for each well.
Use:
For comparison of a single compliance well to background wells when data do not follow a normal distribution, or there are 15% to 90% non-detects.
Remarks:
The Wilcoxon Rank-Sum method can only determine that the specified well has statistically elevated levels of the parameter, but it can not determine which parameter caused the increased elevation.