Question

please give the answer for last 2 sums

Answer 1

Heya !!!

8. Modal class - 40 - 50

where l = 40 lower limit of the model class

H = 10-0 = 10

F1 = 20 ( frequency of modal class)

F0 =12 ( frequency of class before modal class )

F2=11 ( frequency of class after modal class )

$l +( f1 - f0) \div( 2f1 - f0 - f2) \times h$
$40 + (20 - 12) \div 2(20) - 12 - 11 \times 10$

$40 - (8) \div (40 - 23) \times 10$
$40 + (80) \div 70 = 40 + 4.7$
$44.7$

hope it helps u dear ^_^