 The Lepage test statistic is the squared Euclidean distance of standardized Wilcoxon rank-sum test for location and the standardized Ansari–Bradley test for scale.The Lepage test was first introduced by Yves Lepage in 1971 in a paper in "Biometrika".A large number of Lepage-type tests exists in statistical literature for simultaneously testing location and scale shifts in case-control studies.