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开始
1
单样本和双样本估计问题
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统计/总结、学习指南和公式
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来自维基教科书,开放的书本,开放的世界
<
统计
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单样本和双样本估计问题
[
编辑
|
编辑源代码
]
术语
公式
定义
注释
主题
统计量
Θ
^
{\displaystyle {\hat {\Theta }}}
无偏估计量
μ
Θ
^
=
E
(
Θ
^
)
=
θ
{\displaystyle \mu _{\hat {\Theta }}{=}E({\hat {\Theta }}){=}\theta }
参数
θ
{\displaystyle \theta }
最有效估计量
具有最小方差的估计量
样本量
当样本量为
n
{\displaystyle n}
时,误差小于 e 的置信度
n
=
(
z
α
/
2
σ
e
)
2
{\displaystyle n{=}({z_{\alpha /2}\sigma \over e})^{2}}
置信区间
x
¯
−
z
α
/
2
σ
n
<
μ
<
x
¯
+
z
α
/
2
σ
n
{\displaystyle {\bar {x}}-z_{\alpha /2}{\sigma \over {\sqrt {n}}}<\mu <{\bar {x}}+z_{\alpha /2}{\sigma \over {\sqrt {n}}}}
类别
:
书籍:统计
华夏公益教科书