The Carus Mathematical Monographs 
NUMBER THREE 
MATHEMATICAL 
STATISTICS 
Bw 
HENRY LEWIS:RIETZ 
Professor of Mathematics, The University of Towa 
E) 
5 9 
=. 5 
Or AM FRY 
Published for 
THE MATHEMATICAL ASSOCIATION OF AMERICA 
oy 
THE OPEN COURT PUBLISHING COMPANY 
CHICAGO - ILLINOIS