Question

31. The median of the following frequency data is 20.75. Find the missing frequencies a and b, if the
total frequency is 100.
0-5
5-10
10-15
15-20
20-25
25 - 30
30-35
35-40
Class - Interval
Frequency
7
10
13
b
10
14
9
​

Answer 1

Explanation:

the balance number 37 real the position of b but there is no a frequency position