Question

what is the formula for calculating mode of grouped data?

Answer 1

Mode of grouped data
$l + \binom{f1 \: - \: f0}{2f1 \: - \: f2 \: - \: f0} \times h$
l = lower limit if modal class
f1 = frequency of modal class
f2 = frequency of next modal class
f0 = frequency of preceeding class
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Answer 2

Mode = l + (f1 - f0 / 2f1 - f0 - f2) × h
Where.... l = lower limit of modal class
............. f1 = frequency of modal class
.............. f0 = frequency of preceding class
............... f2 = frequency of succeeding class
............... h = hight of modal class
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