{"id":4578,"date":"2026-04-15T18:55:30","date_gmt":"2026-04-15T09:55:30","guid":{"rendered":"https:\/\/best-biostatistics.com\/toukei-er\/?p=4578"},"modified":"2026-04-15T18:55:32","modified_gmt":"2026-04-15T09:55:32","slug":"the-golden-rule-for-merging-averages-why-weighted-averages-are-essential-over-simple-averages","status":"publish","type":"post","link":"https:\/\/best-biostatistics.com\/toukei-er\/entry\/the-golden-rule-for-merging-averages-why-weighted-averages-are-essential-over-simple-averages\/","title":{"rendered":"\u5e73\u5747\u5024\u3092\u7d71\u5408\u3059\u308b\u969b\u306e\u9244\u5247\u2015\u2015\u306a\u305c\u300c\u5358\u7d14\u5e73\u5747\u300d\u3067\u306f\u306a\u304f\u300c\u91cd\u307f\u4ed8\u3051\u300d\u304c\u5fc5\u8981\u306a\u306e\u304b"},"content":{"rendered":"\n<p>\u30c7\u30fc\u30bf\u5206\u6790\u306e\u73fe\u5834\u306b\u304a\u3044\u3066\u3001\u7570\u306a\u308b\u4e8c\u3064\u306e\u30b0\u30eb\u30fc\u30d7\u304b\u3089\u5f97\u3089\u308c\u305f\u5e73\u5747\u5024\u3092\u4e00\u3064\u306b\u307e\u3068\u3081\u3001\u5168\u4f53\u50cf\u3092\u628a\u63e1\u3057\u305f\u3044\u5834\u9762\u306f\u591a\u3044\u3002\u3057\u304b\u3057\u3001\u3053\u3053\u3067\u5b89\u6613\u306b\u300c\u4e8c\u3064\u306e\u5e73\u5747\u5024\u3092\u8db3\u3057\u30662\u3067\u5272\u308b\u300d\u3068\u3044\u3046\u8a08\u7b97\u3092\u884c\u3063\u3066\u306f\u306a\u3089\u306a\u3044\u3002<\/p>\n\n\n\n<p>\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u30b5\u30f3\u30d7\u30eb\u30b5\u30a4\u30ba\uff08\u4eba\u6570\u3084\u8a66\u884c\u56de\u6570\uff09\u304c\u7570\u306a\u308b\u5834\u5408\u3001\u5358\u7d14\u306a\u5e73\u5747\u8a08\u7b97\u3067\u306f\u5b9f\u614b\u3092\u6b6a\u3081\u3066\u3057\u307e\u3046\u30ea\u30b9\u30af\u304c\u3042\u308b\u304b\u3089\u3060\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u7d71\u8a08\u7684\u306a\u59a5\u5f53\u6027\u3092\u4fdd\u3061\u306a\u304c\u3089\u30c7\u30fc\u30bf\u3092\u7d71\u5408\u3059\u308b\u305f\u3081\u306e\u300c\u91cd\u307f\u4ed8\u3051\u5e73\u5747\uff08\u52a0\u91cd\u5e73\u5747\uff09\u300d\u306b\u3064\u3044\u3066\u3001\u305d\u306e\u5fc5\u8981\u6027\u3068\u5177\u4f53\u7684\u306a\u7b97\u51fa\u30ed\u30b8\u30c3\u30af\u3092\u89e3\u8aac\u3059\u308b\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\">\u300c\u5e73\u5747\u306e\u5e73\u5747\u300d\u304c\u5f15\u304d\u8d77\u3053\u3059\u8aa4\u8b2c<\/h2>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u3042\u308b\u8a66\u9a13\u306b\u304a\u3044\u3066\u300c\u30b0\u30eb\u30fc\u30d7A\uff0810\u4eba\uff09\uff1a\u5e73\u574760\u70b9\u300d\u3068\u300c\u30b0\u30eb\u30fc\u30d7B\uff08100\u4eba\uff09\uff1a\u5e73\u574790\u70b9\u300d\u3068\u3044\u3046\u7d50\u679c\u304c\u51fa\u305f\u3068\u4eee\u5b9a\u3059\u308b\u3002\u3053\u308c\u3089\u3092\u5358\u7d14\u306b\u5e73\u5747\u3059\u308b\u3068 $(60 + 90) \\div 2 = 75$ \u70b9\u3068\u306a\u308b\u304c\u3001\u3053\u308c\u306f\u5168\u53d7\u9a13\u8005110\u4eba\u306e\u5b9f\u614b\u3092\u6b63\u3057\u304f\u53cd\u6620\u3057\u3066\u3044\u308b\u3060\u308d\u3046\u304b\u3002<\/p>\n\n\n\n<p>\u53d7\u9a13\u8005\u306e9\u5272\u4ee5\u4e0a\uff08100\u4eba\uff09\u304c90\u70b9\u3068\u3044\u3046\u9ad8\u5f97\u70b9\u3092\u7372\u5f97\u3057\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u308f\u305a\u304b10\u4eba\u306e\u30b0\u30eb\u30fc\u30d7\u3068\u540c\u3058\u300c\u91cd\u307f\u300d\u3067\u6271\u3063\u3066\u3057\u307e\u3046\u3068\u3001\u5168\u4f53\u306e\u8a55\u4fa1\u3092\u4e0d\u5f53\u306b\u4f4e\u304f\u898b\u7a4d\u3082\u308b\u3053\u3068\u306b\u306a\u308b\u3002\u30c7\u30fc\u30bf\u306e\u4fe1\u983c\u6027\u306f\u30b5\u30f3\u30d7\u30eb\u30b5\u30a4\u30ba\u306b\u4f9d\u5b58\u3059\u308b\u305f\u3081\u3001\u4eba\u6570\u306e\u591a\u3044\u30b0\u30eb\u30fc\u30d7\u306e\u6570\u5024\u3092\u3088\u308a\u91cd\u8996\u3059\u308b\u306e\u304c\u7d71\u8a08\u5b66\u4e0a\u306e\u539f\u5247\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u91cd\u307f\u4ed8\u3051\u5e73\u5747\u306e\u8a08\u7b97\u30ed\u30b8\u30c3\u30af<\/h2>\n\n\n\n<p>\u30c7\u30fc\u30bf\u306e\u7d71\u5408\u306b\u304a\u3044\u3066\u5b88\u308b\u3079\u304d\u30eb\u30fc\u30eb\u306f\u3001<span class=\"swl-marker mark_orange\">\u300c\u4e00\u5ea6\u3001\u500b\u3005\u306e\u30c7\u30fc\u30bf\u306e\u7dcf\u548c\u306b\u7acb\u3061\u8fd4\u308b<\/span>\u300d\u3053\u3068\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<p><strong>\u3010\u5177\u4f53\u7684\u306a\u8a08\u7b97\u5f0f\u3011<\/strong><\/p>\n\n\n\n<p>\u4eca\u56de\u306e\u4f8b\uff0810\u4eba\u304c60\u70b9\u3001100\u4eba\u304c90\u70b9\uff09\u3092\u7d71\u5408\u3059\u308b\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u5f0f\u3092\u7528\u3044\u308b\u3002<\/p>\n\n\n\n<p>$$\\text{\u5168\u4f53\u306e\u5e73\u5747} = \\frac{(60\\text{\u70b9} \\times 10\\text{\u4eba}) + (90\\text{\u70b9} \\times 100\\text{\u4eba})}{10\\text{\u4eba} + 100\\text{\u4eba}}$$<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u5404\u7fa4\u306e\u5408\u8a08\u5024\u3092\u7b97\u51fa\u3059\u308b:<\/strong> $60 \\times 10 = 600$ \u70b9\u3001\u304a\u3088\u3073 $90 \\times 100 = 9,000$ \u70b9\u3002<\/li>\n\n\n\n<li><strong>\u5168\u4f53\u306e\u7dcf\u8a08\u3092\u51fa\u3059:<\/strong> $600 + 9,000 = 9,600$ \u70b9\u3002<\/li>\n\n\n\n<li><strong>\u5168\u4f53\u306e\u30b5\u30f3\u30d7\u30eb\u30b5\u30a4\u30ba\u3067\u5272\u308b:<\/strong> $9,600 \\div 110 \\fallingdotseq 87.3$ \u70b9\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5358\u7d14\u5e73\u5747\u306e\u300c75\u70b9\u300d\u3068\u6bd4\u3079\u3001\u4eba\u6570\u304c\u591a\u3044\u30b0\u30eb\u30fc\u30d7B\u306e\u30b9\u30b3\u30a2\u306b\u8fd1\u3044\u300c87.3\u70b9\u300d\u304c\u5c0e\u304d\u51fa\u3055\u308c\u305f\u3002\u3053\u308c\u304c\u3001\u4e00\u4eba\u3072\u3068\u308a\u306e\u30c7\u30fc\u30bf\u3092\u7b49\u4fa1\u306b\u6271\u3063\u305f\u300c\u771f\u306e\u5168\u4f53\u5e73\u5747\u300d\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<div id=\"biost-3966633805\" class=\"biost- biost-entity-placement\"><p style=\"text-align: center;\"><span style=\"font-size: 20px;\"><strong><a href=\"https:\/\/best-biostatistics.com\/kmhl\">\uff1e\uff1e\u3082\u3046\u7d71\u8a08\u3067\u60a9\u3080\u306e\u306f\u7d42\u308f\u308a\u306b\u3057\u307e\u305b\u3093\u304b\uff1f\u00a0<\/a><\/strong><\/span><\/p>\r\n<a href=\"https:\/\/best-biostatistics.com\/kmhl\"><img class=\"aligncenter wp-image-2794 size-full\" src=\"https:\/\/best-biostatistics.com\/wp\/wp-content\/uploads\/2023\/11\/bn_r_03.png\" alt=\"\" width=\"500\" height=\"327\" \/><\/a>\r\n<p style=\"text-align: center;\"><span style=\"color: #ff0000; font-size: 20px;\"><strong><span class=\"marker2\">\u21911\u4e07\u4eba\u4ee5\u4e0a\u306e\u533b\u7642\u5f93\u4e8b\u8005\u304c\u8cfc\u8aad\u4e2d<\/span><\/strong><\/span><\/p><\/div><h2 class=\"wp-block-heading\">\u5177\u4f53\u7684\u306a\u6d3b\u7528\u30b7\u30fc\u30f3<\/h2>\n\n\n\n<p>\u3053\u306e\u624b\u6cd5\u306f\u3001\u30d3\u30b8\u30cd\u30b9\u304b\u3089\u7814\u7a76\u307e\u3067\u5e45\u5e83\u3044\u5206\u91ce\u3067\u5fc5\u9808\u306e\u30b9\u30ad\u30eb\u3068\u306a\u308b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u591a\u65bd\u8a2d\u5171\u540c\u7814\u7a76:<\/strong> \u8907\u6570\u306e\u65bd\u8a2d\u3067\u5b9f\u65bd\u3055\u308c\u305f\u8a66\u9a13\u7d50\u679c\u3092\u7d71\u5408\u3057\u3001\u6cbb\u7642\u306e\u5e73\u5747\u7684\u306a\u6709\u52b9\u6027\u3092\u8a55\u4fa1\u3059\u308b\u5834\u5408\u3002<\/li>\n\n\n\n<li><strong>\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0:<\/strong> \u5730\u57df\u3054\u3068\u306b\u56de\u7b54\u6570\u304c\u7570\u306a\u308b\u30a2\u30f3\u30b1\u30fc\u30c8\u7d50\u679c\u3092\u3001\u5168\u56fd\u5e73\u5747\u3068\u3057\u3066\u96c6\u8a08\u3059\u308b\u5834\u5408\u3002<\/li>\n\n\n\n<li><strong>\u6559\u80b2\u8a55\u4fa1:<\/strong> \u30af\u30e9\u30b9\u4eba\u6570\u304c\u7570\u306a\u308b\u8907\u6570\u306e\u5b66\u7d1a\u3092\u3001\u5b66\u5e74\u5168\u4f53\u306e\u5e73\u5747\u3068\u3057\u3066\u7b97\u51fa\u3059\u308b\u5834\u5408\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081\uff1a\u5206\u6790\u306e\u7cbe\u5ea6\u306f\u300c\u91cd\u307f\u300d\u306e\u7406\u89e3\u306b\u5bbf\u308b<\/h2>\n\n\n\n<p>\u5e73\u5747\u5024\u306f\u5f37\u529b\u306a\u6307\u6a19\u3067\u3042\u308b\u304c\u3001\u305d\u306e\u80cc\u5f8c\u306b\u3042\u308b\u300c\u30b5\u30f3\u30d7\u30eb\u30b5\u30a4\u30ba\u300d\u3092\u7121\u8996\u3057\u305f\u77ac\u9593\u306b\u3001\u30c7\u30fc\u30bf\u306f\u8aac\u5f97\u529b\u3092\u5931\u3046\u3002\u4e8c\u7fa4\u306e\u30c7\u30fc\u30bf\u3092\u7d71\u5408\u3059\u308b\u969b\u306f\u3001\u5e38\u306b\u300c\u4e00\u4eba\u3072\u3068\u308a\u306e\u91cd\u307f\u306f\u5e73\u7b49\u304b\u300d\u3092\u81ea\u554f\u81ea\u7b54\u3059\u3079\u304d\u3067\u3042\u308b\u3002\u91cd\u307f\u4ed8\u3051\u5e73\u5747\u3092\u6b63\u3057\u304f\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u306f\u3001\u8aa0\u5b9f\u3067\u7cbe\u5ea6\u306e\u9ad8\u3044\u30c7\u30fc\u30bf\u5206\u6790\u3078\u306e\u7b2c\u4e00\u6b69\u3068\u8a00\u3048\u308b\u3060\u308d\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u304a\u3059\u3059\u3081\u66f8\u7c4d<\/h2>\n\n\n\n<p><a href=\"https:\/\/amzn.to\/4dJWp5N\">\u3044\u3061\u3070\u3093\u3084\u3055\u3057\u3044\u3001\u533b\u7642\u7d71\u8a08\u3000\u6539\u8a02\u7248\u301c\u56f3\u89e3\u3067\u3059\u3093\u306a\u308a\u308f\u304b\u308b\u7d71\u8a08\u306e\u57fa\u672c<\/a><\/p>\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>\u30c7\u30fc\u30bf\u5206\u6790\u306e\u73fe\u5834\u306b\u304a\u3044\u3066\u3001\u7570\u306a\u308b\u4e8c\u3064\u306e\u30b0\u30eb\u30fc\u30d7\u304b\u3089\u5f97\u3089\u308c\u305f\u5e73\u5747\u5024\u3092\u4e00\u3064\u306b\u307e\u3068\u3081\u3001\u5168\u4f53\u50cf\u3092\u628a\u63e1\u3057\u305f\u3044\u5834\u9762\u306f\u591a\u3044\u3002\u3057\u304b\u3057\u3001\u3053\u3053\u3067\u5b89\u6613\u306b\u300c\u4e8c\u3064\u306e\u5e73\u5747\u5024\u3092\u8db3\u3057\u30662\u3067\u5272\u308b\u300d\u3068\u3044\u3046\u8a08\u7b97\u3092\u884c\u3063\u3066\u306f\u306a\u3089\u306a\u3044\u3002 \u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u30b5\u30f3\u30d7\u30eb\u30b5\u30a4 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[25],"tags":[],"class_list":["post-4578","post","type-post","status-publish","format-standard","hentry","category-25"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/posts\/4578","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/comments?post=4578"}],"version-history":[{"count":1,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/posts\/4578\/revisions"}],"predecessor-version":[{"id":4579,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/posts\/4578\/revisions\/4579"}],"wp:attachment":[{"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/media?parent=4578"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/categories?post=4578"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/tags?post=4578"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}