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  <author_name>derwind</author_name>
  <author_url>https://blog.hatena.ne.jp/derwind/</author_url>
  <blog_title>らんだむな記憶</blog_title>
  <blog_url>https://randommemory.hatenablog.com/</blog_url>
  <categories>
    <anon>statistics</anon>
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  <description>あまり触れたくない汚い感じだったけど、メモったほうが良さそうなので。 自由度$\nu &gt; 0$のt分布の確率密度函数は次の式で与えられる。\begin{equation} f_\nu (t) = \frac{\Gamma(\frac{\nu + 1}{2})}{\sqrt{\nu \pi}\, \Gamma(\frac{\nu}{2})} \left(1 + \frac{t^2}{\nu} \right)^{-\frac{\nu + 1}{2}} \end{equation}ここで、$\Gamma$函数と$B$函数の関係式\begin{equation} B(x,y) = \frac{\Gam…</description>
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  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2015-11-01 12:32:12</published>
  <title>t分布</title>
  <type>rich</type>
  <url>https://randommemory.hatenablog.com/entry/2015/11/01/123212</url>
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