Gehan's Non-Parametric Test

 

See Also:

Slippage Non-Parametric Test

Wilcoxon Non-Parametric Group Comparison

Quantile Non-Parametric Test

 

Description:

 

Gehan's test is provided in the U.S. Navy 1999 Guidance Document as a test to determine if compliance point measurements are statistically elevated when compared to background. It is a non-parametric test, and therefore a normal distribution is not required, and the test is suitable for any number of non-detects. In ChemStat, the test can be performed at the 99% or 95% confidence levels.

 

 

Use:

 

Use Gehan's test to determine if compliance measurements as a group are statistically elevated when compared to background as a group. The test can not be used to determine statistically elevated levels at individual monitoring points.

 

Remarks:

 

At least 10 measurements from compliance points and 10 measurements from background monitoring points are required to run this test.