answer plssss question no. 8
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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.