21) The Algebraic sum of the deviation of a set of values from their Arithmetic Means (N18) a) >0 b) =0 d) None c)
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Answered by
4
Answer:
Correct option is
A
0
Let A.M. of x
1
,x
2
,....x
n
=
n
x
1
+x
2
+....+x
n
=K
Mean deviation =
n
∑
1
n
(x−K)
=
n
x
1
−K+x
2
−K+....+x
n
−K
=
n
x
1
+x
2
+....+x
n
−nK
=
n
x
1
+x
2
+....+x
n
−K
⇒K−K=0
Hence, the algebraic sum of the deviations of a set of n values from their mean is 0
Explanation:
top answer hope it's helpful ❤
Answered by
2
Answer:
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