Question

Find the missing frequencies f1 and f2 if the mean of 50 observations given below

is 38.2.

Class interval Frequency

0 – 10 4

10 - 20 4

20 – 30 f1

30 - 40 10

40 - 50 f2

50 - 60 8

60 – 70 5


please tell me fast because I didn't find answer of this question​

Answer 1

Answer:

0-10 4 10-20 4 20-30 f1 30-40 10 40-50 f2 50-60 8 60-70 5. 1. See answer ... us make a table for easy calculation. It is given that Mean is 38.2