Descriptive and inferential statistics :  a contemporary approach / 
Richard P. Runyon 
 - Reading, Mass. :  Addison-Wesley,  1977 
 - viii, 354 p. ;  27 cm. 
<br/><br/><label>ISBN: </label>0201066556 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics--Problems, exercises, etc.