Find the mean of the following data:
0-10
10-20
Class interval
20-30
30-40
40-50
16.
12
6
7
9
Frequency
Answers
Answered by
5
Step-by-step explanation:
Class Interval frequency (fi) Mid value
0-10 12 12 5
10-20 16 16 15
20-30 6 6 25
30-40 7 7 35
40-50 9 9 45
fixi
60
240
150
245
405
N=∑fi=50
∑fixi=1100
∴Mean= ∑fixi/∑fi= 1100/50 =22
Attachments:
Similar questions