{"blog_title":"\u3089\u3093\u3060\u3080\u306a\u8a18\u61b6","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frandommemory.hatenablog.com%2Fentry%2F2020%2F07%2F29%2F175601\" title=\"t\u5206\u5e03\u3078\u306e\u9053 (4) - \u3089\u3093\u3060\u3080\u306a\u8a18\u61b6\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"description":"\u4e0d\u504f\u5206\u6563 $s^2$ \u304c\u5f93\u3046\u78ba\u7387\u5206\u5e03\u306f\u30ab\u30a4 2 \u4e57\u5206\u5e03\u306b\u306a\u308b\u306e\u3067\u3001\u305d\u308c\u3092\u898b\u308b\u305f\u3081\u306e\u6e96\u5099\u3092\u3059\u308b\u3002\u3053\u306e\u305f\u3081\u306b [3] p.45 \u306e\u547d\u984c 3.15 \u3092\u5229\u7528\u3059\u308b\u3002\u78ba\u7387\u5909\u6570 $Z$ \u304c\u6a19\u6e96\u6b63\u898f\u5206\u5e03 $N(0,1)$ \u306b\u5f93\u3046\u6642 $Z^2$ \u304c\u81ea\u7531\u5ea6 1 \u306e\u30ab\u30a4 2 \u4e57\u5206\u5e03 $\\chi_1^2$ \u306b\u5f93\u3046\u3068\u3044\u3046\u4e3b\u5f35\u3067\u3042\u308b\u304c\u3001\u3053\u308c\u3092\u7279\u6027\u51fd\u6570\u3092\u7528\u3044\u3066\u78ba\u8a8d\u3059\u308b\u3002 \\begin{align} E[\\exp (i t Z^2)] = \\int_{\\R^1} \\exp (i t x^2) \\frac{1}{\\sqrt{2\\pi}} \\exp \\left( - \\frac{x^2}{2} \\right) dx \\end{a\u2026","categories":["statistics","math-probability"],"blog_url":"https://randommemory.hatenablog.com/","author_name":"derwind","width":"100%","published":"2020-07-29 17:56:01","type":"rich","url":"https://randommemory.hatenablog.com/entry/2020/07/29/175601","height":"190","author_url":"https://blog.hatena.ne.jp/derwind/","provider_name":"Hatena Blog","title":"t\u5206\u5e03\u3078\u306e\u9053 (4)","version":"1.0"}