Ravid, Ruth. <br/><br/>
Practical statistics for educators / 
Ruth Ravid. 
 - 3rd ed. 
 - Lanham, MD :  University Press of America,  2005. 
 - viii,227p. 18 cm :  ill. 
<br/><br/><label>ISBN: </label>0761831827 (paper : alk. paper) 
<br/><br/><label>LCCN: </label>2005924778 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational statistics--Study and teaching.<br/>Educational tests and measurements.