Q. 125.0( 2 Votes )

A student noted t

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

f0=12, f2=11, f=20,h = 10


=40 +

=40 + 4.7 =44.7

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