Downie, N. M.  1910- <br/><br/>
Basic statistical methods / 
N.M. Downie, R.W. Heath. 
 - 5th ed. 
 - New York :  Harper & Row,  c1983. 
 - viii, 371 p. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0060417285 
<br/><br/><label>LCCN: </label>83000213 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Statistical methods.<br/>Statistics.