Q. 125.0( 2 Votes )

Answer :

From the given data we may observe that maximum class frequency is 20 belonging to the class interval 40-50

So, modal class= 40-50

Lower limit, l= 40

f_{0}=12, f_{2}=11, f=20,h = 10

=

=40 +

=40 + 4.7 =44.7

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