Encyclopedia of measurement and statistics / 
editor Neil J. Salkind ; managing editor Kristin Rasmussen 
 - Thousand Oaks, Calif. :  Sage Publications,  2007 
 - 3 v. :  ill. ;  29 cm. 
<br/><br/><label>ISBN: </label>1412916119 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Statistical methods--Encyclopedias<br/>Social sciences--Research--Methodology--Encyclopedias