Question

write down the frquency of the class 20-25 in the following data 18,19,12,13,21,27,29,22,23,26,21,17,23,24​

Answer 1

Answer:

The mean of the following frequency table is 50. But the frequencies f

1

and f

2

in class 20 - 40 and 60 - 80 respectively are missing. Find the missing frequencies.

Classes 0 - 20 20 - 40 40 - 60 60 - 80 80 - 100 Total

Frequency 17 f

1

32 f

2

19 N=∑f

i

=120