Walker, Helen M.  <br/><br/>
Elementary statistical methods / 
by Helen M. Walker 
 - New york :  Henry Holt and Co. ,  1943 . 
 - 368 p.  Hard Back 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics<br/>Frequency of distribution<br/>Correlation
<br/><br/><label>Dewey Class. No.: </label>519.5  / HEL-E