Stochastic comparisons of spacings from restricted families of distributions

Abstract Let X1:n⩽X2:n⩽⋯⩽Xn:n denote the order statistics of a random sample X1,…,Xn from a distribution F with support (0,∞). Let the generalized spacings [resp. spacings, normalized spacings and dual normalized spacings] of the X-sample be defined by U j,i:n =X j:n −X i:n , 0⩽i , [resp. U i:n =X i:n −X i−1:n , C i:n =(n−i+1)U i:n and C i:n =(i−1)U i:n ] with X0:n=0. We establish some comparison results for the generalized spacings in one-sample and two-sample problems, and also give some results for spacings complementing some known results in the literature.