Weisberg, Herbert F.
Central tendancy and variability .-- London : Beverly Hills : Sage University , 1975
.--1 v. 22 cm. .-- ( Quantitative applications in the social sciences ; 83 ).
Central tendancy and variability .-- London : Beverly Hills : Sage University , 1975
.--1 v. 22 cm. .-- ( Quantitative applications in the social sciences ; 83 ).