Phillips, John L. <br/><br/>
How to think about statistics / 
by John L. Phillips. 
 - 6th ed. 
 - New York, N.Y. :  W.H. Freeman and Company,  2000. 
 - xiv, 202 p. 
<br/><br/> Includes index. 
<br/><br/>Frequency distribution--Measures of central tendency. 
<br/><br/><label>ISBN: </label>0716736543 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Վիճակագրություն<br/>Psychology.