UP TGT Mathematics Statistics Test Series - Part 5
Find the value of missing frequency 'f' if the mean of the distribution [x: 10, 30, 50, 70, 90; freq: 17, 5a, 32, f, 19]...
Type: MCQ • Marks: 1
Find the value of missing frequency 'f' if the mean of the distribution [x: 10, 30, 50, 70, 90; freq: 17, 5a, 32, f, 19] is 50 and sum of frequencies is 120. (Assume 5a is fixed as 22).
Options
A. 1) 30
B. 2) 32
C. 3) 28
D. 4) 24
Explanation
N = 17 + 22 + 32 + f + 19 = 90 + f = 120 => f = 30.
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