Ott, Lyman. <br/><br/>
An introduction to statistical methods and data analysis / 
R. Lyman Ott. 
 - 4th ed. 
 - Belmont, Calif. :  Duxbury Press,  1993. 
 - xviii, 1051, 132 p. :  ill. ;  25 cm.  
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0534931502 (cased) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical statistics.