Question

ET
7.19
STATISTICS
EXAMPLE 7 The mean of the following frequency table 50. But the frequencies f, and fz in class
20-40 and 60 - 80 are missing. Find the missing frequencies.
Class
0 20 20-40 40 - 60 60 - 80 80 - 100 Total
Frequency
17
32
f
19
120
[CBSE 2006C​

Answer 1

Answer:

sorry kanadont know the answer