Question

33. If the median of the following frequency distribution is 45 and total frequency is 74, then find the
missing frequencies.

C.I F

10-20 5
20-30 8
30-40 X
40-50 12
50-60 y
60-70 10
70-80 14

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Answer 1

$\sf{\green{\underline{\underline{\orange{Answer :-}}}}}$

Let the frequency of the class 30 - 40 be f1 and that of the class 50 - 60 be f2. The total frequency is 229 12 + 30 + f1 + 65 + f2 + 25 + 18 = 229 => f1 + f2 = 79 It is given that median is 46., clearly, 46 lies in the class 40 - 50. So, 40 - 50 is the median class.