{"id":1197,"date":"2022-01-10T22:39:55","date_gmt":"2022-01-10T13:39:55","guid":{"rendered":"https:\/\/aiacademy.jp\/media\/?p=1197"},"modified":"2022-02-20T13:32:03","modified_gmt":"2022-02-20T04:32:03","slug":"%e3%80%90%e5%88%9d%e5%bf%83%e8%80%85%e5%90%91%e3%81%91%e3%80%91%e6%a8%99%e6%ba%96%e5%81%8f%e5%b7%ae%e3%81%a8%e3%81%af%e4%bd%95%e3%81%8b","status":"publish","type":"post","link":"https:\/\/aiacademy.jp\/media\/?p=1197","title":{"rendered":"\u3010\u521d\u5fc3\u8005\u5411\u3051\u3011\u6a19\u6e96\u504f\u5dee\u3068\u306f\u4f55\u304b\uff1f\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\uff01"},"content":{"rendered":"\n<div class=\"toc\">    <div id=\"toc_container\" class=\"sgb-toc--no-bullets js-smooth-scroll\" data-dialog-title=\"Table of Contents\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">\u6a19\u6e96\u504f\u5dee\u3068\u306f<\/a>  <\/li>  <li>    <a href=\"#i-1\">\u6a19\u6e96\u504f\u5dee\u306e\u6c42\u3081\u65b9<\/a>  <\/li>  <li>    <a href=\"#i-2\">\u5206\u6563(variance)\u3068\u306f<\/a>  <\/li>  <li>    <a href=\"#i-3\">\u5206\u6563\u3068\u6a19\u6e96\u504f\u5dee\u306e\u9055\u3044<\/a>  <\/li>  <li class=\"last\">    <a href=\"#i-4\">\u307e\u3068\u3081<\/a>  <\/li><\/ul>\n      \n    <\/div><\/div><div class=\"toc\"><p><\/p>\n<\/div><h2 class=\"wp-block-heading\" id=\"i-0\">\u6a19\u6e96\u504f\u5dee\u3068\u306f<\/h2>\n\n\n\n<p><strong>\u6a19\u6e96\u504f\u5dee\u3068\u306f\u3001\u5206\u6563\u306e\u5e73\u65b9\u6839\u3092\u3068\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u8a08\u7b97\u3055\u308c\u308b<meta charset=\"utf-8\">\u57fa\u672c\u7d71\u8a08\u91cf\u306e1\u3064\u3067\u3001\u30c7\u30fc\u30bf\u306e\u6563\u3089\u3070\u308a\u306e\u5ea6\u5408\u3044\u3092\u793a\u3057\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<p>\u6a19\u6e96\u504f\u5dee\u306f\u4ee5\u4e0b\u306e\u5f0f\u3067\u8868\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2022\/01\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2022-01-10-21.54.16.png\" alt=\"\" class=\"wp-image-1199\" width=\"290\" height=\"99\"><\/figure>\n\n\n\n<p>\u30c7\u30fc\u30bf\u306e\u6563\u3089\u3070\u308a\u304c\u5927\u304d\u3044\u3068\u6a19\u6e96\u504f\u5dee\u3082\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u6563\u3089\u3070\u308a\u304c\u5c0f\u3055\u3044\u3068\u6a19\u6e96\u504f\u5dee\u306f 0 \u306b\u8fd1\u3065\u304d\u307e\u3059\u3002\u6587\u5b57\u5f0f\u3067\u306f\u3001\u5206\u6563\u306e\u6587\u5b57\u5f0f\u304b\u3089\uff12\u4e57\u3092\u53d6\u3063\u3066\u3001\u300cs\u300d\u3084\u300c\u03c3\u300d\u306a\u3069\u3068\u8868\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-1\">\u6a19\u6e96\u504f\u5dee\u306e\u6c42\u3081\u65b9<\/h2>\n\n\n\n<p>\u6a19\u6e96\u504f\u5dees\u3092\u6c42\u3081\u308b\u306b\u306f4\u3064\u306e\u30b9\u30c6\u30c3\u30d7\u3092\u9806\u306b\u8e0f\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>1. \u5e73\u5747\u5024\u3092\u6c42\u3081\u308b<\/p><p>2. \u504f\u5dee\uff08\u6570\u5024 \uff0d \u5e73\u5747\u5024\uff09\u3092\u6c42\u3081\u308b<\/p><p>3. \u5206\u6563\uff08\u504f\u5dee\u306e\u4e8c\u4e57\u5e73\u5747\uff09\u3092\u6c42\u3081\u308b<\/p><p>4. \u5206\u6563\u306e\u6b63\u306e\u5e73\u65b9\u6839\u3092\u6c42\u3081\u308b<\/p><\/blockquote>\n\n\n\n<p>\u6a19\u6e96\u504f\u5dee\u3092\u6c42\u3081\u308bPython\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>scores = [90,80,40,60,90]\n\ndef mean(scores):\n    s = sum(scores)\n    N = len(scores)\n    mean = s \/\/ N\n    return mean\n\n# 1. \u5e73\u5747\u5024\u3092\u6c42\u3081\u308b\nmean = mean(scores)\n\n# 2. \u504f\u5dee\u3092\u6c42\u3081\u308b\ndiff = []\nfor n in scores:\n  # \u4e00\u4eba\u4e00\u4eba\u306e\u30b9\u30b3\u30a2\u304b\u3089\u5e73\u5747\u5024\u3092\u5f15\u3044\u305f\u3082\u306e\u3092diff\u30ea\u30b9\u30c8\u306e\u672b\u5c3e\u306b\u8ffd\u52a0\u3002\n  diff.append(n-mean)\n\nprint(\"\u504f\u5dee\", diff)\n\n# 3. \u5206\u6563\u3092\u6c42\u3081\u308b\nimport numpy as np\n\n# \u5206\u6563(variance)\nv = np.var(scores)\nprint(\"\u5206\u6563\", v)\n\n# 4. \u5206\u6563\u306e\u6b63\u306e\u5e73\u65b9\u6839\u3092\u6c42\u3081\u308b\nstd = np.std(scores)\nprint(\"\u6a19\u6e96\u504f\u5dee\", std)<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-2\">\u5206\u6563(variance)\u3068\u306f<\/h2>\n\n\n\n<p>\u5206\u6563\u3068\u306f\u6570\u5024\u30c7\u30fc\u30bf\u306e\u3070\u3089\u3064\u304d\u5177\u5408\u3092\u8868\u3059\u305f\u3081\u306e\u6307\u6a19\u3067\u3059\u3002\u5206\u6563\u306f\u3001\u504f\u5dee\uff08\u305d\u308c\u305e\u308c\u306e\u6570\u5024\u3068\u5e73\u5747\u5024\u306e\u5dee\uff09\u3092\u4e8c\u4e57\u3057\u3001\u5e73\u5747\u3092\u53d6\u308b\u3053\u3068\u3067\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"223\" height=\"87\" src=\"https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2022\/01\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2022-01-10-21.56.20.png\" alt=\"\" class=\"wp-image-1202\"><\/figure>\n\n\n\n<p>\u5f0f\u3092\u898b\u3066\u3044\u305f\u3060\u304f\u3068\u3001\u5206\u6563\u306f<strong>\u6a19\u6e96\u504f\u5dee\u3092\u4e8c\u4e57\u3057\u305f\u5024<\/strong>\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>numpy\u306e<code>var()<\/code>\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u5206\u6563\u3092\u8868\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import numpy as np\n\n# \u5206\u6563(variance)\nv = np.var(scores)\nprint(\"\u5206\u6563\", v) # \u5206\u6563 376.0\n\nscores = [90,80,40,60,90]\ns = sum(scores)\nN = len(scores)\nmean = s \/\/ N\n\nV1 = 0\nfor i in scores:\n\tV1 = V1 + (1\/len(scores)) * (i - mean)**2\n\nprint(V1) # 376.0<\/code><\/pre>\n\n\n\n<p>\u51fa\u529b\u7d50\u679c<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">376.0\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">\u5206\u6563\u3068\u6a19\u6e96\u504f\u5dee\u306e\u9055\u3044<\/h2>\n\n\n\n<p>\u5206\u6563\u3082\u6a19\u6e96\u504f\u5dee\u306e\u3069\u3061\u3089\u3082<meta charset=\"utf-8\"><strong>\u30c7\u30fc\u30bf\u306e\u6563\u3089\u3070\u308a\u306e\u5ea6\u5408\u3044\u3092<\/strong>\u793a\u3059\u305f\u3044\u3067\u3059\u304c\u3001\u4e00\u822c\u7684\u306b\u3070\u3089\u3064\u304d\u306e\u5927\u304d\u3055\u3092\u793a\u3059\u969b\u306b\u306f\u3001\u5206\u6563\u3067\u306f\u306a\u304f\u6a19\u6e96\u504f\u5dee\u3092\u7528\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u7406\u7531\u3068\u3057\u3066\u3001\u5206\u6563\u306f\u4e8c\u4e57\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u9577\u3055\u306e\u3070\u3089\u3064\u304d\u306e\u5834\u5408\u306b\u3001\u9577\u3055\u306e\uff12\u4e57\u306e\u5358\u4f4d\u3092\u6301\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u6a19\u6e96\u504f\u5dee\u306e\u5834\u5408\u3001\u540c\u3058\u5358\u4f4d\u3067\u8a55\u4fa1\u3057\u305f\u65b9\u304c\u611f\u899a\u7684\u306b\u7406\u89e3\u3057\u3084\u3059\u3044\u305f\u3081\u3001\u4e00\u822c\u7684\u306b\u3070\u3089\u3064\u304d\u3092\u8868\u3059\u5834\u5408\u306b\u306f\u3001\u5206\u6563\u306e\u5e73\u65b9\u6839\u3092\u3068\u3063\u305f\u6a19\u6e96\u504f\u5dee\u3092\u7528\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-4\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u6a19\u6e96\u504f\u5dee\u3068\u306f\u4f55\u304b\u3001<meta charset=\"utf-8\">\u6a19\u6e96\u504f\u5dee\u306e\u7b97\u51fa\u65b9\u6cd5\u306b\u95a2\u3057\u3066\u5b66\u3073\u307e\u3057\u305f\u3002<br>\u6a19\u6e96\u504f\u5dee\u306f\u7d71\u8a08\u306e\u66f8\u7c4d\u306a\u3069\u3067\u5fc5\u305a\u3068\u8a00\u3063\u3066\u826f\u3044\u307b\u3069\u51fa\u3066\u304d\u307e\u3059\u306e\u3067\u3001\u3057\u3063\u304b\u308a\u3068\u7406\u89e3\u3057\u3066\u4f7f\u3044\u3053\u306a\u305b\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/aiacademy.jp\/bootcamp\/\">AI Academy Bootcamp<\/a>\u306e\u300c<a href=\"https:\/\/aiacademy.jp\/bootcamp\/\">\u30aa\u30f3\u30c7\u30de\u30f3\u30c9\u52d5\u753b\uff0b\u30c1\u30e3\u30c3\u30c8\u30b5\u30dd\u30fc\u30c8\u30d7\u30e9\u30f3<\/a>\u300d\u306f\uff16\u30f6\u6708\u3001\u6a5f\u68b0\u5b66\u7fd2\u30a8\u30f3\u30b8\u30cb\u30a2\u3084\u30c7\u30fc\u30bf\u30b5\u30a4\u30a8\u30f3\u30c6\u30a3\u30b9\u30c8\u304b\u3089\u30c1\u30e3\u30c3\u30c8\u306b\u3066\u3001<meta charset=\"utf-8\">\u53d7\u8b1b\u671f\u9593\u4e2d\u3001Python\u3084\u7d71\u8a08\u5b66\u3001\u6a5f\u68b0\u5b66\u7fd2\u306a\u3069\u8cea\u554f\u3057\u653e\u984c\u3067\u3059\u3002<\/p>\n\n\n\n<p>\uff16\u30f6\u6708\u9593\u8cea\u554f\u3057\u653e\u984c\u3067\u3001\u53d7\u8b1b\u6599\u308235,000\u5186\uff08\u7a0e\u8fbc\uff09\u3068\u304a\u624b\u8efd\u306b\u3054\u53d7\u8b1b\u9802\u3051\u307e\u3059\u3002<br>\uff081\u65e5\u306e\u53d7\u8b1b\u8cbb\u7528\u63db\u7b97\u3067\u3001194\u5186\u3067\u3054\u53d7\u8b1b\u9802\u3051\u307e\u3059\u3002\uff09<\/p>\n\n\n\n<p>\u662f\u975e\u3001\u3044\u3064\u3067\u3082\u8cea\u554f\u3057\u653e\u984c\u306e\u74b0\u5883\u3067\u52b9\u7387\u306e\u826f\u3044AI\u5b66\u7fd2\u3092\u59cb\u3081\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/aiacademy.jp\/bootcamp\/\">AI Academy&nbsp;Bootcamp<\/a><\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/aiacademy.jp\/bootcamp\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"341\" src=\"https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2021\/12\/bootcamp_ad_72ppi-1024x341.png\" alt=\"\" class=\"wp-image-691\" srcset=\"https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2021\/12\/bootcamp_ad_72ppi-1024x341.png 1024w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2021\/12\/bootcamp_ad_72ppi-300x100.png 300w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2021\/12\/bootcamp_ad_72ppi-768x256.png 768w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2021\/12\/bootcamp_ad_72ppi-940x313.png 940w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2021\/12\/bootcamp_ad_72ppi.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u6b21 \u6a19\u6e96\u504f\u5dee\u3068\u306f \u6a19\u6e96\u504f\u5dee\u306e\u6c42\u3081\u65b9 \u5206\u6563(variance)\u3068\u306f \u5206\u6563\u3068\u6a19\u6e96\u504f\u5dee\u306e\u9055\u3044 \u307e\u3068\u3081 \u6a19\u6e96\u504f\u5dee\u3068\u306f \u6a19\u6e96\u504f\u5dee\u3068\u306f\u3001\u5206\u6563\u306e\u5e73\u65b9\u6839\u3092\u3068\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u8a08\u7b97\u3055\u308c\u308b\u57fa\u672c\u7d71\u8a08\u91cf\u306e1\u3064\u3067\u3001\u30c7\u30fc\u30bf\u306e\u6563\u3089\u3070\u308a\u306e\u5ea6\u5408\u3044\u3092\u793a\u3057\u307e\u3059 &#8230; <\/p>\n","protected":false},"author":1,"featured_media":1204,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[154,131],"tags":[],"class_list":{"0":"post-1197","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-154","8":"category-131"},"_links":{"self":[{"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/posts\/1197","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1197"}],"version-history":[{"count":12,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/posts\/1197\/revisions"}],"predecessor-version":[{"id":1214,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/posts\/1197\/revisions\/1214"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/media\/1204"}],"wp:attachment":[{"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}