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對稱概率分佈

對稱概率分佈symmetric probability distribution)係概率分佈一種。一個對稱概率分佈定義上係指符合下面呢條式嘅概率分佈,當中 係個分佈上嘅一點[1]

所有實數

對稱度symmetry)係指一個概率分佈可以有嘅一個屬性,攞個概率分佈當中嘅一個 值,個分佈喺 左邊嗰部份同個分佈喺 右邊嗰部份形狀上愈相似,個概率分佈以 為中心嘅對稱度就愈高;喺實際應用上,量度一個概率分佈嘅對稱度嗰陣會用嘅 值通常會係個分佈嘅平均值[1]

[編輯]
  1. 1.0 1.1 Ali, Mir M. (1980). "Characterization of the Normal Distribution Among the Continuous Symmetric Spherical Class". Journal of the Royal Statistical Society. Series B (Methodological). 42 (2): 162–164.
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對稱概率分佈
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