au=bernauthor basedon=12.3 Section Exercise 30 bau=Bello bname=Topics in Contemporary Mathematics by Bello 2008, ed. 9, ISBN 0618775242 book=usf_math_bello_tcm_9e btitle=Topics in Contemporary Mathematics chap=12 cname=Statistics comm=p30 difflev=0 edt=9 error= extlink= gradable=1 ilev=0 isbn=0618775242 kw= lo=12.3.1 loname=Measures of Dispersion: The Range and Standard Deviation page= parse=preview pr=bernproofer pt=full sect=3 sname=Measures of Dispersion: The Range and Standard Deviation source= spell=preview st=gold taxon= tname= view=edit_h warn=0 year=2008