Statistics made simple  / 
Broto, Antonio S. 
 - 2nd ed. 
 - Mandaluyong :  National Book Store,  2006. 
 - 299p.;22cm. 
<br/><br/>includes exercises, references, appendices 
<br/><br/><label>ISBN: </label>9710866958 
<br/><br/><label>Dewey Class. No.: </label>Fil 310 B63 2006