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Byju's Answer
Standard XI
Mathematics
Mean Deviation
The mean devi...
Question
The mean deviation of the variates 40, 62, 68, 76, 54 from their arithmetic mean is
A
9.4
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B
10
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C
11
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D
10.4
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Solution
The correct option is
D
10.4
A
.
M
=
40
+
62
+
68
+
76
+
54
5
=
300
5
=
60
∴
M
.
D
.
=
∑
|
x
i
−
¯
x
|
n
=
|
40
−
60
|
+
|
62
−
60
|
+
|
68
−
60
|
+
|
76
−
60
|
+
|
54
−
60
|
5
20
+
2
+
8
+
16
+
6
5
=
52
5
=
10.4
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