Calculate mean deviation from mean and median for the given data 5,8,11,12,14
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Find the mean deviation about the median for the data in the following:-
x
i
5 7 9 10 12 15
f
i
8 6 2 2 2 6
Easy
Solution
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xi fi fixi ∣xi−
x
∣ fi∣xi−
x
∣
5 8 40 ∣5−9∣=4 32
7 6 42 2 12
9 2 18 0 0
10 2 20 1 2
11 2 24 3 6
12 6 90 6 36
26
254
∑=88
Mean(x)=
∑fi
∑fixi
=
26
234
=9
Mean Deviation about mean =
∑fi
∑fi∣xi−
x
∣
=
26
88
=3.384
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