{"id":202,"date":"2023-07-15T02:34:38","date_gmt":"2023-07-15T02:34:38","guid":{"rendered":"https:\/\/mathority.org\/ja\/%e5%88%86%e6%95%a3\/"},"modified":"2023-07-15T02:34:38","modified_gmt":"2023-07-15T02:34:38","slug":"%e5%88%86%e6%95%a3","status":"publish","type":"post","link":"https:\/\/mathority.org\/ja\/%e5%88%86%e6%95%a3\/","title":{"rendered":"\u5dee\u7570\u306f\u4f55\u3067\u3059\u304b?"},"content":{"rendered":"<p>\u5206\u6563\u306f\u3001<strong>\u30c7\u30fc\u30bf\u304c\u5e73\u5747\u306e\u5468\u56f2\u306b\u3069\u306e\u7a0b\u5ea6\u9069\u5207\u306b\u5206\u5e03\u3057\u3066\u3044\u308b\u304b\u3092<\/strong>\u793a\u3059\u7d71\u8a08\u7684\u5c3a\u5ea6\u3067\u3059\u3002\u5e73\u5747\u5024\u304b\u3089\u30c7\u30fc\u30bf\u304c\u3069\u306e\u7a0b\u5ea6\u300c\u5e83\u304c\u308a\u300d\u3066\u3044\u308b\u304b\u3092\u6e2c\u5b9a\u3059\u308b\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u30c6\u30b9\u30c8\u306e\u70b9\u6570\u306a\u3069\u306e\u6570\u5b57\u306e\u30ea\u30b9\u30c8\u304c\u3042\u308b\u3068\u60f3\u50cf\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5206\u6563\u306f<strong>\u3001\u3053\u308c\u3089\u306e\u30b9\u30b3\u30a2\u304c\u4e92\u3044\u306b\u3069\u306e\u3088\u3046\u306b\u7570\u306a\u308b\u304b\u3092<\/strong>\u7406\u89e3\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u30b9\u30b3\u30a2\u304c\u4e92\u3044\u306b\u975e\u5e38\u306b\u8fd1\u3044\u5834\u5408\u3001\u5206\u6563\u306f\u4f4e\u304f\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30b9\u30b3\u30a2\u9593\u306b\u5927\u304d\u306a\u5dee\u304c\u3042\u308b\u5834\u5408\u3001\u5206\u6563\u306f\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e00\u822c\u306b\u3001\u5206\u6563\u306f\u3001\u4e00\u9023\u306e\u5024\u306b\u304a\u3051\u308b<a href=\"https:\/\/mathority.org\/ja\/\u7d71\u8a08\u7684\u5206\u6563\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u30c7\u30fc\u30bf\u306e\u5206\u6563\u3092<\/a>\u7406\u89e3\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u30c4\u30fc\u30eb\u3067\u3059\u3002\u5206\u6563\u304c\u9ad8\u3044\u5834\u5408\u306f\u30c7\u30fc\u30bf\u304c\u3088\u308a\u5206\u6563\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u3001\u5206\u6563\u304c\u4f4e\u3044\u5834\u5408\u306f\u30c7\u30fc\u30bf\u304c\u4e92\u3044\u306b\u63a5\u8fd1\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span id=\"Como_se_calcula_la_varianza\">\u30ae\u30e3\u30c3\u30d7\u306f\u3069\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u307e\u3059\u304b?<\/span><\/h2>\n<p>\u5206\u6563\u3092\u8a08\u7b97\u3059\u308b\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u6570\u5b66\u7684\u624b\u9806\u3092\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u898b\u305f\u76ee\u3088\u308a\u3082\u7c21\u5358\u306a\u306e\u3067\u5fc3\u914d\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u307e\u305a\u3001\u30c7\u30fc\u30bf\u306e\u5e73\u5747\u3092\u8a08\u7b97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u6b21\u306b\u3001\u5e73\u5747\u304b\u3089\u5404\u30c7\u30fc\u30bf\u3092\u5f15\u304d\u3001\u305d\u308c\u305e\u308c\u306e\u5dee\u3092\u4e8c\u4e57\u3057\u307e\u3059\u3002\u6b21\u306b\u3001\u3053\u308c\u3089\u306e\u6b63\u65b9\u5f62\u3092\u3059\u3079\u3066\u52a0\u7b97\u3057\u3001\u30c7\u30fc\u30bf\u91cf\u3067\u5272\u308a\u307e\u3059\u3002\u305d\u308c\u306f\u504f\u5dee\u5024\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u3092\u3082\u3046\u5c11\u3057\u3088\u304f\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u5206\u6563\u306e\u8a08\u7b97\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d7 1: \u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b<\/strong><\/p>\n<p>\u6b21\u306e\u30c7\u30fc\u30bf\u304c\u3042\u308b\u3068\u3057\u307e\u3059: 5\u30017\u30019\u300111\u300113\u3002\u3053\u308c\u3089\u306f\u3001\u5206\u6563\u3092\u8a08\u7b97\u3059\u308b\u30c7\u30fc\u30bf\u306e\u30b5\u30f3\u30d7\u30eb\u304b\u3089\u306e\u5024\u3067\u3059\u3002<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d7 2: \u5e73\u5747\u3092\u8a08\u7b97\u3059\u308b<\/strong><\/p>\n<p>\u3059\u3079\u3066\u306e\u5024\u3092\u5408\u8a08\u3057\u3001\u30c7\u30fc\u30bf\u306e\u7dcf\u91cf\u3067\u5272\u3063\u3066\u5e73\u5747\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\u5e73\u5747 = (5 + 7 + 9 + 11 + 13) \u00f7 5 = 45 \u00f7 5 = 9<\/p>\n<p>\u30c7\u30fc\u30bf\u306e\u5e73\u5747\u306f 9 \u3067\u3059\u3002<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d7 3: \u5404\u30c7\u30fc\u30bf\u30dd\u30a4\u30f3\u30c8\u304b\u3089\u5e73\u5747\u3092\u6e1b\u7b97\u3059\u308b<\/strong><\/p>\n<p>\u524d\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u53d6\u5f97\u3057\u305f\u5e73\u5747\u3092\u30ea\u30b9\u30c8\u5185\u306e\u5404\u30c7\u30fc\u30bf\u9805\u76ee\u304b\u3089\u6e1b\u7b97\u3057\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"> 5 \u2013 9 = -4<\/p>\n<p class=\"has-text-align-center\"> 7 \u2013 9 = -2<\/p>\n<p class=\"has-text-align-center\"> 9 \u2013 9 = 0<\/p>\n<p class=\"has-text-align-center\"> 11 \u2013 9 = 2<\/p>\n<p class=\"has-text-align-center\"> 13 \u2013 9 = 4<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d7 4: \u305d\u308c\u305e\u308c\u306e\u5dee\u3092\u4e8c\u4e57\u3059\u308b<\/strong><\/p>\n<p>\u524d\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u5f97\u3089\u308c\u305f\u5404\u5dee\u3092\u4e8c\u4e57\u3057\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"> (-4) <sup>2<\/sup> = 16<\/p>\n<p class=\"has-text-align-center\"> (-2) <sup>2<\/sup> = 4<\/p>\n<p class=\"has-text-align-center\"> 0 <sup>2<\/sup> = 0<\/p>\n<p class=\"has-text-align-center\"> 2 <sup>2<\/sup> = 4<\/p>\n<p class=\"has-text-align-center\"> 4 <sup>2<\/sup> = 16<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d7 5: \u5dee\u306e\u4e8c\u4e57\u3092\u52a0\u7b97\u3059\u308b<\/strong><\/p>\n<p>\u524d\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u5f97\u3089\u308c\u305f\u3059\u3079\u3066\u306e\u7d50\u679c\u3092\u5408\u8a08\u3057\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\"> 16 + 4 + 0 + 4 + 16 = 40<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d7 6: \u30c7\u30fc\u30bf\u91cf\u3067\u5272\u308b<\/strong><\/p>\n<p>\u5dee\u306e\u4e8c\u4e57\u548c\u3092\u30c7\u30fc\u30bf\u306e\u7dcf\u91cf (\u3053\u306e\u5834\u5408\u306f 5) \u3067\u5272\u308a\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\u504f\u5dee = 40 \u00f7 5 = 8<\/p>\n<p><strong>\u30c7\u30fc\u30bf\u306e\u5206\u6563\u306f 8 \u3067\u3059<\/strong>\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span id=\"Cual_es_la_formula_de_la_varianza\">\u5206\u6563\u306e\u516c\u5f0f\u306f\u4f55\u3067\u3059\u304b?<\/span><\/h2>\n<p>\u3053\u306e\u70b9\u3092\u5206\u6790\u3059\u308b\u524d\u306b\u3001\u5206\u6563\u306f\u7d71\u8a08\u306b\u3068\u3063\u3066\u975e\u5e38\u306b\u91cd\u8981\u3067\u3042\u308b\u3053\u3068\u306b\u8a00\u53ca\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u308c\u306f\u975e\u5e38\u306b\u5358\u7d14\u306a\u6e2c\u5b9a\u3067\u3042\u308b\u3068\u3044\u3046\u4e8b\u5b9f\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u7279\u5b9a\u306e\u5909\u6570\u306b\u57fa\u3065\u3044\u3066\u8208\u5473\u6df1\u3044\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p>\u6e2c\u5b9a\u5358\u4f4d\u306f\u5e38\u306b\u30c7\u30fc\u30bf\u306b\u5bfe\u5fdc\u3059\u308b 2 \u4e57\u306b\u306a\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u5206\u6563\u306f\u5e38\u306b\u30bc\u30ed\u4ee5\u4e0a\u3067\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306f\u3001\u6b8b\u5dee\u304c\u5e38\u306b 2 \u4e57\u3055\u308c\u308b\u305f\u3081\u3001\u6570\u5b66\u7684\u306b\u8a00\u3048\u3070\u3001\u8ca0\u306e\u5206\u6563\u304c\u5b58\u5728\u3059\u308b\u3053\u3068\u306f\u4e0d\u53ef\u80fd\u3067\u3042\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u3092\u5ff5\u982d\u306b\u7f6e\u3044\u3066\u3001\u4ee5\u4e0b\u306b\u5206\u6563\u306e\u516c\u5f0f\u3092\u793a\u3057\u307e\u3059\u3002 <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"171\" height=\"58\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/formule-decart.webp\" data-src=\"\" alt=\"\u504f\u5dee\u516c\u5f0f\" class=\"wp-image-11754 lazyload\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p> <sup>S2<\/sup> = \u30ae\u30e3\u30c3\u30d7<\/p>\n<p>x <sub>i<\/sub> = \u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u9805<\/p>\n<p>X\u0304 = \u30b5\u30f3\u30d7\u30eb\u6e2c\u5b9a\u5024<\/p>\n<p>\u2211 = \u5408\u8a08<\/p>\n<p>n = \u30b5\u30f3\u30d7\u30eb\u30b5\u30a4\u30ba<\/p>\n<h2 class=\"wp-block-heading\"><span id=\"Que_es_la_varianza_alta_y_baja\">\u9ad8\u5206\u6563\u3068\u4f4e\u5206\u6563\u3068\u306f\u4f55\u3067\u3059\u304b?<\/span><\/h2>\n<p><a href=\"https:\/\/mathority.org\/ja\/\u7d71\u8a08\u30b5\u30f3\u30d5\u309a\u30eb\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u7d71\u8a08\u30b5\u30f3\u30d7\u30eb<\/a>\u307e\u305f\u306f\u6bcd\u96c6\u56e3\u306e\u30c7\u30fc\u30bf\u304c\u307e\u308c\u3067<strong>\u5e73\u5747\u304b\u3089\u304b\u3051\u96e2\u308c\u3066<\/strong>\u3044\u308b\u5834\u5408\u3001\u5206\u6563\u306f\u9ad8\u3044\u3068\u898b\u306a\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30c7\u30fc\u30bf\u5185\u306e\u500b\u3005\u306e\u5024\u304c\u5e83\u304f\u5206\u5e03\u3057\u3066\u304a\u308a\u3001\u30c7\u30fc\u30bf\u306b\u5927\u304d\u306a\u3070\u3089\u3064\u304d\u304c\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n<p>\u5bfe\u7167\u7684\u306b\u3001\u30b5\u30f3\u30d7\u30eb\u307e\u305f\u306f\u6bcd\u96c6\u56e3\u306e\u30c7\u30fc\u30bf\u304c<strong>\u5e73\u5747\u306b\u8fd1\u304f\u3001\u500b\u3005\u306e\u5024\u9593\u306e\u5206\u6563\u304c\u307b\u3068\u3093\u3069\u306a\u3044<\/strong>\u5834\u5408\u3001\u5206\u6563\u306f\u4f4e\u3044\u3068\u307f\u306a\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30c7\u30fc\u30bf\u306e\u4e00\u8cab\u6027\u304c\u3088\u308a\u9ad8\u304f\u3001\u3070\u3089\u3064\u304d\u304c\u5c11\u306a\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span id=\"Cuales_son_los_principales_usos_de_la_varianza\">\u5206\u6563\u306e\u4e3b\u306a\u7528\u9014\u306f\u4f55\u3067\u3059\u304b?<\/span><\/h2>\n<p>\u5206\u6563\u306f\u3001\u30b5\u30f3\u30d7\u30eb\u5185\u306e\u30c7\u30fc\u30bf\u306e\u5206\u6563\u307e\u305f\u306f\u5909\u52d5\u6027\u3092\u8a55\u4fa1\u3067\u304d\u308b\u305f\u3081\u3001\u3055\u307e\u3056\u307e\u306a\u5206\u91ce\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u7d71\u8a08\u7684\u5c3a\u5ea6\u3067\u3059\u3002\u5206\u6563\u306e\u4e3b\u306a\u7528\u9014\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u8a18\u8ff0\u7d71\u8a08<\/strong>\u2013 \u30b5\u30f3\u30d7\u30eb\u5185\u306e\u30c7\u30fc\u30bf\u306e\u5206\u6563\u3092\u8a18\u8ff0\u3057\u3001\u500b\u3005\u306e\u5024\u304c\u5e73\u5747\u304b\u3089\u3069\u306e\u3088\u3046\u306b\u9038\u8131\u3057\u3066\u3044\u308b\u304b\u3001\u30b5\u30f3\u30d7\u30eb\u5185\u3067\u3069\u306e\u3088\u3046\u306b\u5206\u5e03\u3057\u3066\u3044\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p><strong>\u63a8\u8ad6\u7d71\u8a08<\/strong>\u2013 \u30b5\u30f3\u30d7\u30eb\u304b\u3089\u6bcd\u96c6\u56e3\u5185\u306e\u30c7\u30fc\u30bf\u306e\u3070\u3089\u3064\u304d\u3092\u63a8\u5b9a\u3057\u3001\u6bcd\u96c6\u56e3\u5168\u4f53\u306b\u3064\u3044\u3066\u63a8\u8ad6\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u91d1\u878d\u5206\u91ce<\/strong>: \u6295\u8cc7\u306e\u30ea\u30b9\u30af\u3068\u30ea\u30bf\u30fc\u30f3\u306e\u5206\u6790\u3002\u5206\u6563\u304c\u5927\u304d\u3044\u307b\u3069\u30ea\u30b9\u30af\u304c\u9ad8\u3044\u3053\u3068\u3092\u793a\u3057\u3001\u5206\u6563\u304c\u5c0f\u3055\u3044\u307b\u3069\u6295\u8cc7\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u306e\u30ea\u30b9\u30af\u304c\u4f4e\u3044\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u79d1\u5b66\u7814\u7a76<\/strong>\u2013 \u533b\u5b66\u7814\u7a76\u3001\u751f\u7269\u5b66\u3001\u5fc3\u7406\u5b66\u3001\u305d\u306e\u4ed6\u306e\u5206\u91ce\u306a\u3069\u306e\u79d1\u5b66\u7814\u7a76\u306b\u304a\u3051\u308b\u30c7\u30fc\u30bf\u306e\u3070\u3089\u3064\u304d\u3092\u5206\u6790\u3057\u3001\u7d50\u679c\u306e\u3070\u3089\u3064\u304d\u3068\u30c7\u30fc\u30bf\u306e\u4e00\u8cab\u6027\u3092\u7406\u89e3\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u30d7\u30ed\u30bb\u30b9\u54c1\u8cea\u306e\u7ba1\u7406<\/strong>: \u5de5\u696d\u30d7\u30ed\u30bb\u30b9\u306e\u54c1\u8cea\u7ba1\u7406\u3067\u306f\u3001\u88fd\u9020\u3055\u308c\u308b\u88fd\u54c1\u307e\u305f\u306f\u30b5\u30fc\u30d3\u30b9\u306e\u3070\u3089\u3064\u304d\u3092\u6e2c\u5b9a\u3057\u3001\u30d7\u30ed\u30bb\u30b9\u306e\u4e00\u8cab\u6027\u3068\u54c1\u8cea\u306e\u554f\u984c\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><strong>\u8a08\u91cf\u7d4c\u6e08\u5b66<\/strong>: \u7d4c\u6e08\u5909\u6570\u306e\u5909\u52d5\u6027\u3092\u7406\u89e3\u3057\u3001\u8a08\u91cf\u7d4c\u6e08\u30e2\u30c7\u30eb\u306e\u4fe1\u983c\u6027\u3092\u8a55\u4fa1\u3059\u308b\u305f\u3081\u306e\u7d4c\u6e08\u30c7\u30fc\u30bf\u306e\u30e2\u30c7\u30ea\u30f3\u30b0\u3068\u5206\u6790\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span id=\"Cual_es_la_importancia_de_la_varianza\">\u5dee\u7570\u306e\u610f\u5473\u306f\u4f55\u3067\u3059\u304b?<\/span><\/h2>\n<p>\u5206\u6563\u306f<strong>\u30b5\u30f3\u30d7\u30eb\u5185\u306e\u30c7\u30fc\u30bf\u306e\u3070\u3089\u3064\u304d\u3092\u7406\u89e3\u3067\u304d\u308b<\/strong>\u305f\u3081\u91cd\u8981\u3067\u3059\u3002\u5206\u6563\u304c\u5927\u304d\u3044\u5834\u5408\u306f\u3001\u30c7\u30fc\u30bf\u304c\u307e\u3070\u3089\u3067\u3001\u3070\u3089\u3064\u304d\u304c\u5927\u304d\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u6295\u8cc7\u3001\u30ea\u30b9\u30af\u7ba1\u7406\u3001\u30c7\u30fc\u30bf\u5206\u6790\u306a\u3069\u306e\u5206\u91ce\u3067\u60c5\u5831\u306b\u57fa\u3065\u3044\u305f\u610f\u601d\u6c7a\u5b9a\u3092\u884c\u3046\u3053\u3068\u306b\u95a2\u9023\u3057\u307e\u3059\u3002<\/p>\n<p>\u3055\u3089\u306b\u3001\u5206\u6563\u306f\u30b5\u30f3\u30d7\u30eb\u307e\u305f\u306f\u6bcd\u96c6\u56e3\u5185\u306e\u30c7\u30fc\u30bf\u306e\u4e00\u8cab\u6027\u3092\u7406\u89e3\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u4f4e\u3044\u5206\u6563\u306f\u3001\u30c7\u30fc\u30bf\u306b\u4e00\u8cab\u6027\u304c\u3042\u308a\u3001\u5909\u52d5\u304c\u307b\u3068\u3093\u3069\u306a\u3044\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001\u9ad8\u3044\u5206\u6563\u306f\u3001\u30c7\u30fc\u30bf\u306e\u4e00\u8cab\u6027\u304c\u4f4e\u304f\u3001\u5909\u52d5\u304c\u5927\u304d\u3044\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span id=\"Es_lo_mismo_la_desviacion_estandar_y_la_varianza\">\u6a19\u6e96\u504f\u5dee\u3068\u5206\u6563\u306f\u540c\u3058\u3067\u3059\u304b?<\/span><\/h2>\n<p><a href=\"https:\/\/mathority.org\/ja\/\u5178\u578b\u7684\u306a\u504f\u5dee\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u6a19\u6e96\u504f\u5dee<\/a>\u3068\u5206\u6563\u306f\u3001\u30b5\u30f3\u30d7\u30eb\u307e\u305f\u306f\u6bcd\u96c6\u56e3\u5185\u306e<strong>\u30c7\u30fc\u30bf\u306e\u5e83\u304c\u308a\u307e\u305f\u306f\u5909\u52d5\u6027\u3092\u8868\u3059<\/strong>2 \u3064\u306e\u95a2\u9023\u3059\u308b\u7d71\u8a08\u7684\u5c3a\u5ea6\u3067\u3059\u3002\u305d\u308c\u3089\u306e\u4e3b\u306a\u9055\u3044\u306f\u3001\u6e2c\u5b9a\u5358\u4f4d\u3068\u7d50\u679c\u306e\u89e3\u91c8\u3067\u3059\u3002<\/p>\n<p>\u5206\u6563\u306f\u3001\u5e73\u5747\u304b\u3089\u306e\u30c7\u30fc\u30bf\u306e\u5206\u6563\u3092\u8868\u3059\u5c3a\u5ea6\u3067\u3042\u308a\u3001\u5e73\u5747\u304b\u3089\u306e\u500b\u3005\u306e\u5024\u306e\u504f\u5dee\u306e\u4e8c\u4e57\u548c\u3092\u30c7\u30fc\u30bf\u306e\u7dcf\u6570\u3067\u5272\u3063\u3066\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306f\u3001\u5404\u5024\u3068\u5e73\u5747\u306e\u5dee\u3092\u4e8c\u4e57\u3057\u3066\u5408\u8a08\u3057\u3001\u30b5\u30f3\u30d7\u30eb\u307e\u305f\u306f\u6bcd\u96c6\u56e3\u306e\u30b5\u30a4\u30ba\u3067\u5272\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002\u5206\u6563\u306f\u4e8c\u4e57\u5358\u4f4d\u3067\u8868\u3055\u308c\u3001\u5143\u306e\u30c7\u30fc\u30bf\u3068\u306f\u30b9\u30b1\u30fc\u30eb\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u76f4\u63a5\u89e3\u91c8\u3059\u308b\u306e\u304c\u96e3\u3057\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u6a19\u6e96\u504f\u5dee\u306f<strong>\u5206\u6563\u306e\u5e73\u65b9\u6839<\/strong>\u306b\u3059\u304e\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u3001\u5206\u6563\u306e\u6b63\u306e\u5e73\u65b9\u6839\u3068\u3057\u3066\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002\u6a19\u6e96\u504f\u5dee\u306f\u5143\u306e\u30c7\u30fc\u30bf\u3068\u540c\u3058\u5358\u4f4d\u3067\u8868\u3055\u308c\u3001\u30c7\u30fc\u30bf\u306e\u5206\u6563\u3092\u3088\u308a\u76f4\u89b3\u7684\u306b\u6e2c\u5b9a\u3059\u308b\u5c3a\u5ea6\u3067\u3059\u3002<\/p>\n<p>\u6a19\u6e96\u504f\u5dee\u304c\u9ad8\u3044\u307b\u3069\u3001\u30c7\u30fc\u30bf\u306e\u5e83\u304c\u308a\u307e\u305f\u306f\u3070\u3089\u3064\u304d\u304c\u5927\u304d\u3044\u3053\u3068\u3092\u793a\u3057\u3001\u6a19\u6e96\u504f\u5dee\u304c\u4f4e\u3044\u307b\u3069\u3001\u5e83\u304c\u308a\u307e\u305f\u306f\u3070\u3089\u3064\u304d\u304c\u5c0f\u3055\u3044\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span id=\"Varianza_para_datos_agrupados\">\u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306e\u30ae\u30e3\u30c3\u30d7<\/span><\/h2>\n<p>\u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306e\u5206\u6563<strong>\u3068\u306f\u3001\u9593\u9694\u307e\u305f\u306f\u30af\u30e9\u30b9\u306b\u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306e\u5909\u52d5\u6027\u307e\u305f\u306f\u5206\u6563\u306e\u8a08\u7b97\u3092<\/strong>\u6307\u3057\u307e\u3059\u3002\u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u30c7\u30fc\u30bf\u306e\u5206\u6563\u306e\u5834\u5408\u306e\u3088\u3046\u306b\u3001\u500b\u3005\u306e\u30c7\u30fc\u30bf\u3092\u6301\u3064\u4ee3\u308f\u308a\u306b\u3001\u30c7\u30fc\u30bf\u304c\u8a72\u5f53\u3059\u308b\u7bc4\u56f2\u307e\u305f\u306f\u9593\u9694\u3092\u6301\u3061\u307e\u3059\u3002<\/p>\n<p>\u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306e\u5206\u6563\u306e\u8a08\u7b97\u306f\u3001\u5c11\u3057\u7570\u306a\u308b\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u884c\u308f\u308c\u307e\u3059\u3002\u307e\u305a\u3001\u5404\u9593\u9694\u306e\u4e2d\u70b9\u304c\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u5404\u9593\u9694\u306e\u4e0b\u9650\u3068\u4e0a\u9650\u306e\u5e73\u5747\u3067\u3059\u3002\u6b21\u306b\u3001\u9593\u9694\u306e\u76f8\u5bfe\u983b\u5ea6\u307e\u305f\u306f\u7d76\u5bfe\u983b\u5ea6\u3092\u91cd\u307f\u3068\u3057\u3066\u4f7f\u7528\u3057\u3066\u3001\u4e2d\u9593\u70b9\u306e\u52a0\u91cd\u5e73\u5747\u304c\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u52a0\u91cd\u5e73\u5747\u304b\u3089\u3001<strong>\u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u30c7\u30fc\u30bf\u3068\u540c\u3058\u5f0f\u306b\u5f93\u3063\u3066<\/strong>\u5206\u6563\u304c\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u500b\u3005\u306e\u5024\u3068\u52a0\u91cd\u5e73\u5747\u306e\u5dee\u306e\u4e8c\u4e57\u306e\u5e73\u5747\u3068\u3057\u3066\u5206\u6563\u304c\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u5206\u6563\u306f\u3001\u4eba\u53e3\u7d71\u8a08\u30c7\u30fc\u30bf\u3001\u7d4c\u6e08\u30c7\u30fc\u30bf\u3001\u307e\u305f\u306f\u30ab\u30c6\u30b4\u30ea\u3084\u7bc4\u56f2\u306b\u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u305f\u305d\u306e\u4ed6\u306e\u7a2e\u985e\u306e\u30c7\u30fc\u30bf\u306a\u3069<strong>\u3001\u9593\u9694\u307e\u305f\u306f\u30af\u30e9\u30b9\u3068\u3057\u3066\u8868\u793a\u3055\u308c\u308b\u30c7\u30fc\u30bf \u30bb\u30c3\u30c8\u3092\u64cd\u4f5c\u3059\u308b<\/strong>\u5834\u5408\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span id=\"Propiedades_de_la_varianza\">\u5206\u6563\u7279\u6027<\/span><\/h2>\n<p>\u5206\u6563\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u7279\u6027\u3092\u6301\u3064\u7d71\u8a08\u7684\u5c3a\u5ea6\u3067\u3059\u3002\u5206\u6563\u306e\u4e3b\u306a\u7279\u6027\u306e\u3044\u304f\u3064\u304b\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u500b\u3005\u306e\u30c7\u30fc\u30bf\u3068\u5e73\u5747\u5024\u306e\u5dee\u306e\u4e8c\u4e57\u306e\u5e73\u5747\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u308b\u305f\u3081\u3001<strong>\u5e38\u306b\u8ca0\u3067\u306f\u306a\u3044\u5024\u306b\u306a\u308a\u307e\u3059<\/strong>\u3002<\/li>\n<li>\u5dee\u306e\u4e8c\u4e57\u3067\u3042\u308b\u305f\u3081\u3001<strong>\u30c7\u30fc\u30bf\u5185\u306e\u6975\u7aef\u306a\u5024\u307e\u305f\u306f\u7570\u5e38\u5024\u306e\u5f71\u97ff\u3092\u53d7\u3051\u3084\u3059\u304f\u306a\u308a\u307e\u3059<\/strong>\u3002<\/li>\n<li>\u3053\u308c\u306b\u306f\u3001<strong>\u5358\u4f4d\u306e 2 \u4e57\u304c<\/strong>\u3042\u308a\u3001\u5143\u306e\u30c7\u30fc\u30bf\u3068\u540c\u3058\u5358\u4f4d\u306e 2 \u4e57\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/li>\n<li>\u5916\u308c\u5024\u3084\u6975\u7aef\u306a\u30c7\u30fc\u30bf\u306e\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u30c7\u30fc\u30bf\u306e\u3070\u3089\u3064\u304d\u3092\u793a\u3059<strong>\u78ba\u5b9f\u306a\u5c3a\u5ea6\u3067\u306f\u306a\u304f\u306a\u308b<\/strong>\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li>\u30c7\u30fc\u30bf\u304c\u72ec\u7acb\u3057\u3066\u3044\u3066\u76f8\u4e92\u306b\u76f8\u95a2\u304c\u306a\u3044\u5834\u5408\u30012 \u3064\u306e\u30c7\u30fc\u30bf \u30bb\u30c3\u30c8\u306e\u5408\u8a08\u306e\u5206\u6563\u306f<strong>2 \u3064\u306e\u30c7\u30fc\u30bf \u30bb\u30c3\u30c8\u306e\u5206\u6563\u306e\u5408\u8a08\u306b\u7b49\u3057\u304f\u306a\u308a\u307e\u3059<\/strong>\u3002<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\"><span id=\"Ejemplos_de_varianza\">\u9038\u8131\u306e\u4f8b<\/span><\/h2>\n<p>\u5206\u6563\u306e\u6982\u5ff5\u3068\u305d\u306e\u91cd\u8981\u6027\u3092\u7406\u89e3\u3057\u305f\u3068\u3053\u308d\u3067\u3001\u305d\u308c\u304c\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u304b\u3092\u3088\u308a\u6df1\u304f\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u5b9f\u969b\u306e\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u904e\u53bb 5 \u5e74\u9593\u306e\u4f01\u696d\u306e\u7d4c\u6e08\u7684\u6210\u679c\u306b\u3064\u3044\u3066\u30018\u300112\u30016\u3001-4\u300110 \u3068\u3044\u3046\u30c7\u30fc\u30bf\u304c\u6570\u767e\u4e07\u30c9\u30eb\u3042\u308b\u3068\u3057\u307e\u3059\u3002\u524d\u8ff0\u306e\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u3001\u3053\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u5206\u6563\u3092\u8a08\u7b97\u3057\u305f\u3044\u3068\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d7 1: \u7b97\u8853\u5e73\u5747\u3092\u8a08\u7b97\u3059\u308b<\/strong><\/p>\n<p>\u307e\u305a\u3001\u30c7\u30fc\u30bf\u3092\u52a0\u7b97\u3057\u3001\u30c7\u30fc\u30bf\u306e\u7dcf\u6570 (\u3053\u306e\u5834\u5408\u306f 5) \u3067\u5272\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u306e\u7b97\u8853\u5e73\u5747\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\u7b97\u8853\u5e73\u5747 (X\u0304) = (8 + 12 + 6 \u2013 4 + 10) \u00f7 5 = 640 \u4e07\u30c9\u30eb<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d7 2: \u5206\u6563\u516c\u5f0f\u3092\u4f7f\u7528\u3059\u308b<\/strong><\/p>\n<p>\u6b21\u306b\u3001\u5206\u6563\u516c\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u5404\u30c7\u30fc\u30bf \u30dd\u30a4\u30f3\u30c8\u3068\u7b97\u8853\u5e73\u5747\u306e\u5dee\u306e 2 \u4e57\u3092\u8a08\u7b97\u3057\u3001\u305d\u308c\u3089\u3092\u52a0\u7b97\u3057\u307e\u3059\u3002 <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"171\" height=\"58\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/formule-decart.webp\" data-src=\"\" alt=\"\u504f\u5dee\u516c\u5f0f\" class=\"wp-image-11754 lazyload\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p>\u3053\u3053\u3067\u3001x <sub>i<\/sub>\u306f\u5404\u30c7\u30fc\u30bf\u8981\u7d20\u3001X\u0304 \u306f\u7b97\u8853\u5e73\u5747\u3001n \u306f\u30c7\u30fc\u30bf\u8981\u7d20\u306e\u7dcf\u6570\u3067\u3059\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u3068\u7b97\u8853\u5e73\u5747\u3092\u5206\u6563\u516c\u5f0f\u306b\u4ee3\u5165\u3057\u307e\u3059\u3002<\/p>\n<p class=\"has-text-align-center\">\u504f\u5dee (Var(X)) = [(8 \u2013 6.4) <sup>2<\/sup> + (12 \u2013 6.4) <sup>2<\/sup> + (6 \u2013 6.4) <sup>2<\/sup> + (-4 \u2013 6.4) <sup>2<\/sup> + (10 \u2013 6,4) <sup>2<\/sup> ] \u00f7 (5 \u2013 1)<\/p>\n<p><strong>\u30b9\u30c6\u30c3\u30d7 3: \u6f14\u7b97\u3092\u89e3\u6c7a\u3059\u308b<\/strong><\/p>\n<p>\u6b21\u306b\u3001\u5206\u6563\u306e\u5024\u3092\u53d6\u5f97\u3059\u308b\u6f14\u7b97\u3092\u89e3\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p class=\"has-text-align-center\">\u504f\u5dee (Var(X)) = [1.6 <sup>2<\/sup> + 5.6 <sup>2<\/sup> + 0.16 <sup>2<\/sup> + (-10.4) <sup>2<\/sup> + 3.6 <sup>2<\/sup> ] \u00f7 4<\/p>\n<p class=\"has-text-align-center\">\u504f\u5dee (Var(X)) = [2.56 + 31.36 + 0.0256 + 108.16 + 12.96] \u00f7 4<\/p>\n<p class=\"has-text-align-center\">\u504f\u5dee (Var(X)) = 155.072 \u00f7 4<\/p>\n<p class=\"has-text-align-center\">\u5206\u6563 (Var(X)) = 3876.8 \u4e07 2 \u4e57<\/p>\n<p>\u3053\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u5206\u6563\u306f 3,876 \u4e07 8,000 \u4e57\u3067\u3001\u7b97\u8853\u5e73\u5747\u306b\u5bfe\u3059\u308b\u30c7\u30fc\u30bf\u306e\u5206\u6563\u307e\u305f\u306f\u5909\u52d5\u6027\u306e\u5c3a\u5ea6\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5206\u6563\u306f\u3001\u30c7\u30fc\u30bf\u304c\u5e73\u5747\u306e\u5468\u56f2\u306b\u3069\u306e\u7a0b\u5ea6\u9069\u5207\u306b\u5206\u5e03\u3057\u3066\u3044\u308b\u304b\u3092\u793a\u3059\u7d71\u8a08\u7684\u5c3a\u5ea6\u3067\u3059\u3002\u5e73\u5747\u5024\u304b\u3089\u30c7\u30fc\u30bf\u304c\u3069\u306e\u7a0b\u5ea6\u300c\u5e83\u304c\u308a\u300d\u3066\u3044\u308b\u304b\u3092\u6e2c\u5b9a\u3059\u308b\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002 \u30c6\u30b9\u30c8\u306e\u70b9\u6570\u306a\u3069\u306e\u6570\u5b57\u306e\u30ea\u30b9\u30c8\u304c\u3042\u308b\u3068\u60f3\u50cf\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5206\u6563\u306f\u3001\u3053\u308c\u3089 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/ja\/%e5%88%86%e6%95%a3\/\"> <span class=\"screen-reader-text\">\u5dee\u7570\u306f\u4f55\u3067\u3059\u304b?<\/span> \u3082\u3063\u3068\u8aad\u3080 &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[9,27],"tags":[],"class_list":["post-202","post","type-post","status-publish","format-standard","hentry","category-9","category-27"],"yoast_head":"<!-- This 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content=\"\u5206\u6563\u306f\u3001\u30c7\u30fc\u30bf\u304c\u5e73\u5747\u306e\u5468\u56f2\u306b\u3069\u306e\u7a0b\u5ea6\u9069\u5207\u306b\u5206\u5e03\u3057\u3066\u3044\u308b\u304b\u3092\u793a\u3059\u7d71\u8a08\u7684\u5c3a\u5ea6\u3067\u3059\u3002\u5e73\u5747\u5024\u304b\u3089\u30c7\u30fc\u30bf\u304c\u3069\u306e\u7a0b\u5ea6\u300c\u5e83\u304c\u308a\u300d\u3066\u3044\u308b\u304b\u3092\u6e2c\u5b9a\u3059\u308b\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002 \u30c6\u30b9\u30c8\u306e\u70b9\u6570\u306a\u3069\u306e\u6570\u5b57\u306e\u30ea\u30b9\u30c8\u304c\u3042\u308b\u3068\u60f3\u50cf\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5206\u6563\u306f\u3001\u3053\u308c\u3089 &hellip; \u5dee\u7570\u306f\u4f55\u3067\u3059\u304b? \u3082\u3063\u3068\u8aad\u3080 &raquo;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mathority.org\/ja\/\u5206\u6563\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-15T02:34:38+00:00\" \/>\n<meta property=\"og:image\" 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