Brace, Charles Henry. <br/><br/>
Understanding statistics :  concepts and methods / 
by Charles Henry Brace. 
 - 4th ed. 
 - Toronto :  D.C Heath and Co.,  c1991. 
 - xvii, 616 p. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0669244775 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics.
<br/><br/><label>LC Class. No.: </label>HA35  / .B7