Question

if f1 and f2 are same for grouped data then find mode

Answer 1

A formula to calculate the mode for grouped data's is given in my text book:

Mode = l+ (f1−f0)(2f1−f0−f2) ∗ h

Where, l= lower limit of the modal class,

h= size of the class interval,

f1= frequency of the modal class,

f0= frequency of the class preceding the modal class,

f2= frequency of the class succeeding the modal class.