{"id":958,"date":"2020-06-06T11:00:00","date_gmt":"2020-06-06T02:00:00","guid":{"rendered":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/?p=958"},"modified":"2020-06-01T13:34:39","modified_gmt":"2020-06-01T04:34:39","slug":"random-variable","status":"publish","type":"post","link":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/random-variable","title":{"rendered":"\u78ba\u7387\u5909\u6570\u3068\u306f\u3010\u610f\u5473\u3092\u5fb9\u5e95\u89e3\u8aac\uff01\u3011"},"content":{"rendered":"\n<p class=\"has-text-align-right\"><span style=\"text-decoration: underline;\">\u5b66\u7fd2\u30ec\u30d9\u30eb\uff1a\u9ad8\u6821\u751f\u3000\u96e3\u6613\u5ea6\uff1a\u2605\u2606\u2606\u2606\u2606<\/span><\/p>\n\n\n\n\n\n\n\n<p>\u7d71\u8a08\u5b66\u3092\u52c9\u5f37\u3057\u3066\u3044\u304f\u4e0a\u3067\u3001\u78ba\u7387\u5909\u6570\u3068\u3044\u3046\u8a00\u8449\u3092\u6b63\u3057\u304f\u7406\u89e3\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5b9f\u306f\u78ba\u7387\u5909\u6570\u306b\u3064\u3044\u3066\u5206\u304b\u3063\u3066\u3044\u306a\u3044\u65b9\u306f\u610f\u5916\u3068\u591a\u3044\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u306b\u51fa\u4f1a\u3048\u305f\u65b9\u306f\u81ea\u5206\u306e\u7d71\u8a08\u5b66\u306e\u77e5\u8b58\u3092\u4ed6\u306e\u65b9\u3068\u5dee\u3092\u3064\u3051\u308b\u30c1\u30e3\u30f3\u30b9\u306b\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u662f\u975e\u3068\u3082\u6700\u5f8c\u307e\u3067\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3>\u78ba\u7387\u5909\u6570\u3068\u306f<\/h3>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-00  liquid-speech-balloon-short\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\" style=\"border-color:#d6ebf8;background-color:#d6ebf8;color:#000000\"><p>\u30c7\u30fc\u30bf\u306e\u63a8\u5b9a\u3084\u4e88\u6e2c\u3092\u6271\u3046\u306b\u3042\u305f\u3063\u3066\u78ba\u7387\u5909\u6570\u306f\u3068\u3063\u3066\u3082\u91cd\u8981\u306a\u30ef\u30fc\u30c9\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u78ba\u7387\u5909\u6570\u306b\u3064\u3044\u3066\u6b63\u78ba\u306b\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\uff01<\/p><div class=\"liquid-speech-balloon-arrow\" style=\"border-color:transparent #d6ebf8 transparent transparent\"><\/div><\/div><\/div>\n\n\n\n<div style=\"display: inline-block; background: #33cc33; padding: 5px 10px; color: #ffffff; border-radius: 5px 5px 0 0;\"><strong>\u78ba\u7387\u5909\u6570(random variable)<\/strong><\/div>\n<div style=\"background: #ffffea; padding: 10px; border: 2px solid #33cc33;\">\u78ba\u7387\u5909\u6570\\(X\\)\u3068\u306f\u3001\u4f55\u306e\u5024\u3092\u3068\u308b\u304b\u672a\u77e5\u3067\u306f\u3042\u308b\u304c\u3001\u5909\u6570\\(X\\)\u304c\u5f97\u3089\u308c\u305f\u3068\u304d\u306b\u78ba\u7387\u304c\u4e0e\u3048\u3089\u308c\u308b\u3082\u306e\u306e\u3053\u3068\u3092\u6307\u3057\u307e\u3059\u3002<\/div>\n<p>&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-00  liquid-speech-balloon-short\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\" style=\"border-color:#d6ebf8;background-color:#d6ebf8;color:#000000\"><p>\u30b5\u30a4\u30b3\u30ed\u3092\u4f8b\u306b\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p><div class=\"liquid-speech-balloon-arrow\" style=\"border-color:transparent #d6ebf8 transparent transparent\"><\/div><\/div><\/div>\n\n\n\n<p>\u30b5\u30a4\u30b3\u30ed\u306b\u95a2\u3059\u308b\u78ba\u7387\u5909\u6570\\(X\\)\u306f\u3001\u30b5\u30a4\u30b3\u30ed\u306e\u76ee\u306b\u5f53\u305f\u308a\u307e\u3059\u3002\u30b5\u30a4\u30b3\u30ed\u3092\u632f\u308b\u307e\u3067\u30b5\u30a4\u30b3\u30ed\u306e\u76ee\u306f\u4f55\u304c\u51fa\u308b\u304b\u308f\u304b\u308a\u307e\u305b\u3093\u304c\u3001\u30b5\u30a4\u30b3\u30ed\u3092\u632f\u3063\u30661\u306e\u76ee\u304c\u51fa\u305f\u3068\u304d\u3001\u78ba\u7387\u5909\u6570\u306f\\(X=1\\)\u3068\u306a\u308a\u3053\u306e\u3068\u304d\u306e\u78ba\u7387\u306f\\(1\/6\\)\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3>\u78ba\u7387\u5909\u6570\\(X\\)\u306e\u8868\u8a18\u306b\u3064\u3044\u3066<\/h3>\n\n\n\n<p>\u3088\u304f\u7d71\u8a08\u5b66\u306e\u672c\u3092\u8aad\u3093\u3067\u3044\u308b\u3068\u78ba\u7387\u5909\u6570\\(X\\)\u3092\u7528\u3044\u3066\u3001\u78ba\u7387\u3092$$\\mathrm{P}(X=x)$$\u3068\u8868\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u591a\u3044\u3068\u601d\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u3053\u3053\u3067\u8ce2\u3044\u4eba\u306f\u7591\u554f\u306b\u601d\u3044\u307e\u3059\u3002<a href=\"https:\/\/develop-chronos.com\/statistics-top\/statistics\/probability-def\">\uff1c\u78ba\u7387\u306e\u5b9a\u7fa9\u306e\u8a18\u4e8b\uff1e<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002\u78ba\u7387\\(\\mathrm{P}(\\ast)\\)\u306e\\(\\ast\\)\u306e\u90e8\u5206\u306b\u306f\u4e8b\u8c61\u304c\u5165\u308a\u307e\u3059\u3088\u306d\uff1f\u78ba\u7387\u5909\u6570\u306f\u4e8b\u8c61\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u3053\u3053\u3067\u77db\u76fe\u304c\u751f\u3058\u308b\u308f\u3051\u3067\u3059\u3002<br>\u3000\u5b9f\u306f\\(\\mathrm{P}(X=x)\\)\u306f\u78ba\u7387\u5909\u6570\\(X\\)\u3092\u7528\u3044\u305f\u4e8b\u8c61\u306e\u8868\u8a18\u3092\u7701\u7565\u3057\u305f\u5f62\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3082\u3068\u3082\u3068\u306f\u3069\u306e\u3088\u3046\u306a\u8868\u8a18\u3060\u3063\u305f\u306e\u304b\u3053\u306e\u7bc0\u3067\u306f\u7d39\u4ecb\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-00  liquid-speech-balloon-short\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\" style=\"border-color:#d6ebf8;background-color:#d6ebf8;color:#000000\"><p>\u3053\u306e\u8868\u8a18\u3082\u30b5\u30a4\u30b3\u30ed\u3092\u4f8b\u306b\u7d39\u4ecb\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p><div class=\"liquid-speech-balloon-arrow\" style=\"border-color:transparent #d6ebf8 transparent transparent\"><\/div><\/div><\/div>\n\n\n\n<p>\u30b5\u30a4\u30b3\u30ed\u3092\u632f\u3063\u305f\u3068\u304d\u306b\u30011\u306e\u76ee\u304c\u3067\u308b\u4e8b\u8c61\u306f$$\\{X=1|X=1,2,3,4,5,6\\}$$\u3068\u8868\u3055\u308c\u308b\u306f\u305a\u3067\u3059\uff08\u4e8b\u8c61\u306f\u96c6\u5408\u8a18\u53f7\u3067\u8868\u3055\u308c\u307e\u3059\uff09\u3002\u3088\u3063\u3066\u30b5\u30a4\u30b3\u30ed\u30671\u306e\u76ee\u304c\u51fa\u308b\u78ba\u7387\\(\\mathrm{P}(X=1)\\)\u306f\u6b63\u78ba\u306b\u8a18\u8ff0\u3059\u308b\u3068\\(\\mathrm{P}(\\{X=1|X=1,2,3,4,5,6\\})\\)\u3068\u306a\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u8a18\u8ff0\u306f\u304b\u306a\u308a\u9762\u5012\u3067\u3059\u3088\u306d\uff1f<\/p>\n\n\n\n<p><br>\u3000\u305d\u3053\u3067\u3001\\(\\mathrm{P}(X=x)\\)\u3068\u3044\u3046\u8868\u8a18\u306f\u3001\u5b9f\u306f\\(\\mathrm{P}(\\{X=x|X=x_{1},\\cdots,x_{n}\\})\\)\u3068\u3044\u3046\u8868\u8a18\u3092\u7701\u7565\u3057\u3088\u3046\u3068\u306a\u308a\u307e\u3057\u305f\u3002\u4e0d\u7b49\u53f7\u8868\u8a18\u3082\u540c\u69d8\u306b\u7701\u7565\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>$$\\mathrm{P}(X&gt;x)\\ \\ \\  \\Rightarrow\\ \\ \\  \\mathrm{P}(\\{X|X&gt;x,\\ X=x_{1},\\cdots,x_{n}\\})$$<\/p>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-00  liquid-speech-balloon-short\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\" style=\"border-color:#d6ebf8;background-color:#d6ebf8;color:#000000\"><p>\u610f\u5916\u3068\u3001\u3053\u306e\u7701\u7565\u3092\u8aac\u660e\u3057\u3066\u3044\u308b\u672c\u306f\u5c11\u306a\u3044\u3067\u3059\u3002<br>\u6570\u5b66\u3092\u771f\u9762\u76ee\u306b\u5b66\u7fd2\u3057\u3066\u3044\u308b\u65b9\u306f\u7591\u554f\u306b\u601d\u3046\u3068\u3053\u308d\u3060\u3068\u601d\u3063\u305f\u306e\u3067\u3053\u306e\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<\/p><div class=\"liquid-speech-balloon-arrow\" style=\"border-color:transparent #d6ebf8 transparent transparent\"><\/div><\/div><\/div>\n\n\n\n<h3>\u78ba\u7387\u5909\u6570\u306e\u307e\u3068\u3081<\/h3>\n\n\n\n<p>\u78ba\u7387\u5909\u6570\u3068\u306f\u4f55\u306e\u5024\u3092\u3068\u308b\u304b\u307e\u3060\u6c7a\u307e\u3063\u3066\u306f\u3044\u306a\u3044\u304c\u3001\u78ba\u7387\u5909\u6570\u306b\u5024\u3092\u3044\u308c\u308b\u3068\u3001\u3042\u308b\u78ba\u7387\u3092\u4e0e\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u5909\u6570\u306e\u3053\u3068\u3092\u6307\u3057\u307e\u3059\u3002\u78ba\u7387\u5909\u6570\u3092\u7528\u3044\u3066\u78ba\u7387\u3092\u8868\u8a18\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u304c\u3001\u78ba\u7387\u5909\u6570\u3092\u7528\u3044\u305f\u4e8b\u8c61\u8868\u8a18\u304c\u7701\u7565\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u6df7\u4e71\u304c\u591a\u3044\u3068\u3053\u308d\u3067\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b66\u7fd2\u30ec\u30d9\u30eb\uff1a\u9ad8\u6821\u751f\u3000\u96e3\u6613\u5ea6\uff1a\u2605\u2606\u2606\u2606\u2606 \u7d71\u8a08\u5b66\u3092\u52c9\u5f37\u3057\u3066\u3044\u304f\u4e0a\u3067\u3001\u78ba\u7387\u5909\u6570\u3068\u3044\u3046\u8a00\u8449\u3092\u6b63\u3057\u304f\u7406\u89e3\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5b9f\u306f\u78ba\u7387\u5909\u6570\u306b\u3064\u3044\u3066 &#8230; <\/p>\n","protected":false},"author":1,"featured_media":801,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[54],"tags":[55,65],"jetpack_featured_media_url":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/wp-content\/uploads\/2020\/05\/PAK39_toumeinadice_TP_V.jpg","_links":{"self":[{"href":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/wp-json\/wp\/v2\/posts\/958"}],"collection":[{"href":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/wp-json\/wp\/v2\/comments?post=958"}],"version-history":[{"count":16,"href":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/wp-json\/wp\/v2\/posts\/958\/revisions"}],"predecessor-version":[{"id":993,"href":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/wp-json\/wp\/v2\/posts\/958\/revisions\/993"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/wp-json\/wp\/v2\/media\/801"}],"wp:attachment":[{"href":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/wp-json\/wp\/v2\/media?parent=958"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/wp-json\/wp\/v2\/categories?post=958"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/develop-chronos.com\/statistics-top\/statistics\/wp-json\/wp\/v2\/tags?post=958"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}