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Byju's Answer
Standard XII
Mathematics
Coefficient of Variation
If n = 10, ...
Question
If
n
=
10
,
¯
¯
¯
x
=
12
and
∑
x
2
=
1530
, then calculate the coefficient of variation
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Solution
n
=
10
¯
x
=
12
∑
x
2
=
1530
σ
=
√
∑
x
2
n
−
(
∑
x
n
)
2
σ
=
√
1530
10
−
12
2
σ
=
√
9
σ
=
3
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0
Similar questions
Q.
If
n
=
10
,
¯
x
=
12
and
∑
x
2
=
1530
, then calculate the coefficient of variation.
Q.
If n = 10,
¯
¯¯¯
¯
X
=
12
and
∑
2
x
=
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, then the coefficient of variation is
Q.
If n = 10,
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=
12
and
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i
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=
1530
, then the coefficient of variation is
(a) 36%
(b) 41%
(c) 25%
(d) none of these
Q.
For data
x
1
,
x
2...
,
x
10
,
¯
x
=
12
and
∑
10
i
=
1
X
2
i
=
1530
, then the coefficient of variation is
Q.
Calculate regression coefficient
b
y
x
of the data.
∑
x
=
55
,
∑
y
=
88
,
∑
x
2
=
385
,
∑
y
2
=
385
,
∑
x
y
=
586
,
n
=
10
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