60-69
40-49
30-39
A polling agency interviewed 200 persons. The age distribution of those persons was recorded as under:
Age (Tears)
80_89
70-79
50-59
20-99
Frequency
9
6
Calculate mean age of the persons by Direct Method.
(Ans. X = 35.8 years)
10-19
49
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the answer is already there
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