Ehrenberg, A. S. C. <br/><br/>
A primer in data reduction :  an introductory statistics textbook / 
A.S.C. Ehrenberg. 
 - Chichester [West Sussex] :  Wiley,  1982. 
 - xviii, 305 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0471101354 (pbk. )  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics.<br/>Data reduction.