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Descriptive Statistics
Measures of center, spread, shape, and data visualization.
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A sample of
n
=
10
n=10
n
=
10
has
∑
(
x
i
−
x
ˉ
)
2
=
72
\sum(x_i-\bar x)^2=72
∑
(
x
i
−
x
ˉ
)
2
=
72
.
Find
s
2
s^{2}
s
2
.
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x
n
s
( )
x
n
√
⌫
AC
7
8
9
+
4
5
6
−
1
2
3
×
0
.
a
b
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