Question

1. A polling agency interviewed 200 persons. The age distribution of those person
was recorded as under:
Age (Years) 80-89 70-79 60-69 50-59 40-49 | 30-39 20-29 10-19
Frequency
2
2
6 20 56 40 42
Calculate mean age of the persons by Direct Method. ​

Answer 1

Answer:

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Answer 2

Answer:

39.85

Explanation:

((84.5*2)+(74.5*2)+(64.5*6)+(54.5*20)+(44.5*56)+(34.5*40)+(24.5*42))/168