Wonnacott, Thomas H. <br/><br/>
Introductory statistics / 
Thomas H. Wonnacott [and] Ronald J. Wonnacott. 
 - 2nd ed. 
 - New York :  John Wiley & Sons,  1972. 
 - xxi., 403 p. :  ill. ;  21 cm. 
<br/><br/><label>ISBN: </label>0471959715 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics.