The mean of the number 10, 20, 30 and 40 is
(a) 50
(b) 25
(C) 30
(d) 20
Answers
Answered by
1
Step-by-step explanation:
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
Answered by
1
Answer:
25
Step-by-step explanation:
Mean : 10 + 20 + 30 + 40
4
100
4
Ans : 25
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