Standard Deviation Given Sums (Jee Mains) | ExamDuo
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Dispersion and Variance
Medium
Standard Deviation Given Sums
Let
x
i
(
1
≤
i
≤
10
)
be ten observations of a random variable X. If
10
∑
i
=
1
(
x
i
−
p
)
=
3
and
10
∑
i
=
1
(
x
i
−
p
)
2
=
9
where
0
≠
p
∈
R
,
then the standard deviation of these observations is:
Ask about this question
SELECT ONE OPTION
A
√
3
5
B
7
10
C
9
10
D
4
5
Check