Downie, N. M.  1910- <br/><br/>
Basic statistical methods / 
N. M. Downie and R. W. Heath 
 - 4th ed. 
 - New York :  Harper & Row,  1974 
 - vi, 355 p. :  ill. ;  25 cm. 
<br/><br/>Bibliography: p. 345-347. 
<br/><br/><label>ISBN: </label>0060427310 
<br/><br/><label>LCCN: </label>73-013299 //r84 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics