calculate mean of the following distribution. marks 0-10 , 10-20,20-30,30-40,40-50 and frequency are 20,24,40,36,20 respectively
Answers
Answered by
9
Calculate the mean of the following distribution
CI 0-10 10-20 20-30 30-40 40-50
b 12 16 6 7 9
Answer
Open in answr app
Class Interval frequency (fi) Mid value fixi
0-10 12 5 60
10-20 16 15 240
20-30 6 25 150
30-40 7 35 245
40-50 9 45 405
N=∑fi=50 ∑fixi=1100
∴Mean=
∑fi
∑fixi
=
50
1100
=22
Similar questions