Easy approach to statistics 
By S.P. Gupta 
 - 6th ed/ rep. 
 - New delhi:  S. Chand & Company ltd.,  1995. 
 - viii,239p. 
<br/><br/><label>Subjects--Index Terms: </label>Probabilities & applied mathematics Easy approach to statistics 
<br/><br/><label>Dewey Class. No.: </label>519.5