Question

Illustration 10 : From the following more than cumulative frequency distribution,
(1) Determine the number of the persons having age 40 or more. (ii) Determine the number
of the persons having age less than 40 (iii) Determine original frequency distribution.


Lower boundary
25 30 35 40 45 50 55 60 65 70
point or more than it
Cumulative frequency
100 96
70
45
25 14 6
0
of persons
87
1​

Answer 1

Answer:

iii) determined original frequency distribution