A note on the distribution of the Wilcoxon rank sum statistic
β Scribed by Derek K. Chang
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 388 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0167-7152
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Three methods of approximating the power of Wilcoxon's rank-sum test against shift alternatives are studied. They are obtained by using a Gaussian assumption, Edgeworth expansion, or bootstrap. It is assumed that a historical data set is available to use in estimating the shape of the distribution.
## Abstract For some applications of the WILCOXONβMANNβWHITNEYβstatistic its variance has to be estimated. So e.g. for the test of POTTHOFF (1963) to detect differences in medians of two symmetric distributions as well as for the computation of approximate, confidence bounds for the probability __P