Healey, Joseph F.,  1945- <br/><br/>
Statistics :  a tool for social research / 
Joseph F. Healey. 
 - 9th ed. 
 - Belmont, CA :  Cengage Learning/Wadsworth,  2012. 
 - 526 p.  ill. ;  25 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9781111186364  RM470.07 1111186367 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Statistical methods.<br/>Statistics.