Question

answer plssss question no. 8

Answer 1

Following given data,

Mode of the distribution = 55

Class interval = h =15

Lower limit of modal class = L = 45

Preceding frequency = a = 5

Succeeding frequency = b = 10

Modal class frequency = m = ?

As per formula, Mode = L + (m-a)h/ 2m-a-b

So 55. = 45 + (m-5)15/2m-5-10

So 20m - 150 = 15m - 75

So 5m = 75

Finally m = 15

Thus frequency of modal class = m = 15.