Compute C. V. if = 8, = ∑ = 31500, = 42
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Answer:
If n=10,
x
ˉ
=12 and ∑x
2
=1530, then calculate the coefficient of variation.
Medium
Solution
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Correct option is B)
σ=
n
∑x
2
−(
n
∑x
)
2
=
10
1530
−(12)
2
=
153−144
=
9
=3
Coefficient of variation =
x
σ
×100
=
12
3
×100
=
4
1
×100
=25
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