Abstract
Hodges-Lehmann test is a nonparametric statistics method ,which is often used in solveing block design test problem.It is introduced as improvement of Friedman test.As eliminating differences of each block,this test owns particular merit and is applied widely in various fields.
This article introduces simply Friedman test,and on this base expounds in detail Hodges-Lehmann test .And in two cases of tie and no tie for aligned residual ,we discuss the course of Hodges-Lehmann test,then account for the SAS programs which are used in this article and the result after running SAS.we compare Friedman test and Hodges-Lehmann test in the way of examples analysis , programming with SAS to get result,thus highlight Hodges-Lehmann test particular merit significantly. The application of Hodges-Lehmann test is very abroad ,this article introduces in detail that the test is applied in market research,the analytical result indicates that different sale markets exist significant influence on average sale single price.Finally,we introduce this test another application in polyester-cotton blended process.
Key words：Friedman test； Hodges-Lehmann test； merit； application； SAS
