find the mean of the following data. 301
4.75
10-20 20-30 30-40 40-50
class
intervel
0 - 10
5
frequency
12
16
6
7
9
Answers
Answered by
0
Answer:
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Answered by
0
Answer:
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
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