Healey, Joseph F. <br/><br/>
The essentials of statistics:  A tool for social research / 
Joseph F. Healey 
 - 2nd ed 
 - xix, 440p.:  ill;  23cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780495601432 
<br/><br/><label>Subjects--Topical Terms: </label>--Statistics