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Question 33 - Week 3 Practice | Prasnya
Q33
00:00
25 Feb 2024
Q33.
Consider a dataset of
50
50
50
items. Suppose
∑
(
x
i
−
x
ˉ
)
2
=
8
\sum (x_i-\bar{x})^2=8
∑
(
x
i
−
x
ˉ
)
2
=
8
and
∑
x
i
=
20
\sum x_i=20
∑
x
i
=
20
. Find the mean
x
ˉ
\bar{x}
x
ˉ
and population standard deviation
σ
\sigma
σ
of the dataset.
A
x
ˉ
=
20
,
σ
=
8
\bar{x}=20,\ \sigma=8
x
ˉ
=
20
,
σ
=
8
B
x
ˉ
=
1000
,
σ
=
0.4
\bar{x}=1000,\ \sigma=0.4
x
ˉ
=
1000
,
σ
=
0.4
C
x
ˉ
=
0.4
,
σ
=
0.4
\bar{x}=0.4,\ \sigma=0.4
x
ˉ
=
0.4
,
σ
=
0.4
D
x
ˉ
=
2.5
,
σ
=
0.4
\bar{x}=2.5,\ \sigma=0.4
x
ˉ
=
2.5
,
σ
=
0.4
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Check
Details
Q33
00:00
25 Feb 2024
Q33.
Consider a dataset of
50
50
50
items. Suppose
∑
(
x
i
−
x
ˉ
)
2
=
8
\sum (x_i-\bar{x})^2=8
∑
(
x
i
−
x
ˉ
)
2
=
8
and
∑
x
i
=
20
\sum x_i=20
∑
x
i
=
20
. Find the mean
x
ˉ
\bar{x}
x
ˉ
and population standard deviation
σ
\sigma
σ
of the dataset.
A
x
ˉ
=
20
,
σ
=
8
\bar{x}=20,\ \sigma=8
x
ˉ
=
20
,
σ
=
8
B
x
ˉ
=
1000
,
σ
=
0.4
\bar{x}=1000,\ \sigma=0.4
x
ˉ
=
1000
,
σ
=
0.4
C
x
ˉ
=
0.4
,
σ
=
0.4
\bar{x}=0.4,\ \sigma=0.4
x
ˉ
=
0.4
,
σ
=
0.4
D
x
ˉ
=
2.5
,
σ
=
0.4
\bar{x}=2.5,\ \sigma=0.4
x
ˉ
=
2.5
,
σ
=
0.4
Save
Check
Details
