find the mean of the following data class:: 8,9,10,11,17,20 frequency:: 2,5,6,7,8,12
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I hope this will help you
Step-by-step explanation:
Score
Frequency f
i
∣x
i
−
x
∣
f
i
∣x
i
−
x
∣
6
20
8
18
16
12
4
10
2
7
11
27
18
13
17
5
10.5
5.5
1.5
14.5
5.5
0.5
4.5
7.5
21
38.5
16.5
391.5
99
6.5
76.5
37.5
100
50
687
x
=
8
100
=12.5
Therefore, Mean devation =
∑f
i
∑f(x−
x
)
=
100
687
=6.87.
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