Question

The arithmetic mean of the following frequency distribution is 50. But the
frequencies f, and f, of the classes 20-40 and 60-80 are missing. Find the missing
frequencies.
Class interval 0-20 20-40 40-60 | 60-80 80-100 Total
Frequency 17 f1 32 f2 19 120​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Refer to the attachment