{"id":343,"date":"2019-06-16T00:04:01","date_gmt":"2019-06-15T15:04:01","guid":{"rendered":"https:\/\/obenkyolab.com\/?p=343"},"modified":"2020-05-19T22:56:35","modified_gmt":"2020-05-19T13:56:35","slug":"python%e3%81%a7%e7%b5%b1%e8%a8%88%e5%ad%a6%e5%8b%89%e5%bc%b7%e3%80%80%e6%a8%99%e6%ba%96%e5%81%8f%e5%b7%ae%e3%81%a8%e5%88%86%e6%95%a3","status":"publish","type":"post","link":"https:\/\/obenkyolab.com\/?p=343","title":{"rendered":"\u3010Python\u3011\u6a19\u6e96\u504f\u5dee\u3068\u5206\u6563\u306e\u8a08\u7b97"},"content":{"rendered":"\n\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/obenkyolab.com\/?p=343\/#%E7%9B%AE%E7%9A%84\" >\u76ee\u7684<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/obenkyolab.com\/?p=343\/#%E6%A8%99%E6%BA%96%E5%81%8F%E5%B7%AE\" >\u6a19\u6e96\u504f\u5dee<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/obenkyolab.com\/?p=343\/#Python%E3%81%AB%E3%82%88%E3%82%8B%E6%A8%99%E6%BA%96%E5%81%8F%E5%B7%AE%E3%81%AE%E8%A8%88%E7%AE%97\" >Python\u306b\u3088\u308b\u6a19\u6e96\u504f\u5dee\u306e\u8a08\u7b97<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/obenkyolab.com\/?p=343\/#%E5%88%86%E6%95%A3\" >\u5206\u6563<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%9B%AE%E7%9A%84\"><\/span>\u76ee\u7684<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/obenkyolab.com\/?p=321\">\u4ee5\u524d\u306e\u8a18\u4e8b<\/a>\u3067\u56db\u5206\u4f4d\u504f\u5dee\u306b\u3088\u308a\u30c7\u30fc\u30bf\u306e\u5206\u6563\u5ea6\u306e\u8a08\u7b97\u3092\u884c\u3044\u307e\u3057\u305f\u304c\u3001\u56db\u5206\u4f4d\u504f\u5dee\u3067\u306f\u30c7\u30fc\u30bf\u306e\u4ee3\u8868\u5024\u3067\u3042\u308b\u56db\u5206\u4f4d\u6570\u306e\u307f\u3092\u4f7f\u7528\u3057\u3066\u304a\u308a\u3001\u30c7\u30fc\u30bf\u5168\u4f53\u306e\u7279\u6027\u3092\u53cd\u6620\u3057\u304d\u308c\u3066\u3044\u306a\u3044\u3068\u3044\u3046\u77ed\u6240\u304c\u3042\u308a\u307e\u3059\u3002<br><br>\u305d\u3053\u3067\u4eca\u56de\u306f\u3088\u308a\u4e00\u822c\u7684\u306b\u5206\u6563\u5ea6\u306e\u8a55\u4fa1\u306b\u4f7f\u7528\u3055\u308c\u308b\u6a19\u6e96\u504f\u5dee\u306b\u3064\u3044\u3066\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u3092\u4f7f\u3063\u3066\u306e\u6a19\u6e96\u504f\u5dee\u3092python\u3067\u8a08\u7b97\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A8%99%E6%BA%96%E5%81%8F%E5%B7%AE\"><\/span>\u6a19\u6e96\u504f\u5dee<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u65e9\u901f\u3067\u3059\u304c\u3001\u6a19\u6e96\u504f\u5dee\u306e\u5b9a\u7fa9\u5f0f\u306f\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>$$s=\\sqrt{\\frac{1}{n} \\sum_{i=0}^n  (\\overline{x}-x_i)^2}$$<br><\/p>\n\n\n\n<p>\u3053\u3053\u3067\\(s\\)\u306f\u6a19\u6e96\u504f\u5dee\u3001\\(\\overline{x}\\)\u306f\u30c7\u30fc\u30bf\u306e\u7b97\u8853\u5e73\u5747\u3001\\(x_i\\)\u304c\\(i\\)\u756a\u76ee\u306e\u30c7\u30fc\u30bf\u3001\\(n\\)\u304c\u30c7\u30fc\u30bf\u6570\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5f0f\u306e\u89e3\u91c8\u3068\u3057\u3066\u306f\u3001\u30c7\u30fc\u30bf\u306e\u7b97\u8853\u5e73\u5747\u3068\u3042\u308b\u30c7\u30fc\u30bf\u306e\u5dee\u306e\u4e8c\u4e57\u306e\u5024\u3092\u3059\u306e\u3066\u306e\u30c7\u30fc\u30bf\u306b\u3064\u3044\u3066\u8db3\u3057\u5408\u308f\u305b\u3001\u305d\u306e\u5e73\u65b9\u6839\u3092\u3068\u3063\u3066\u3044\u307e\u3059\u3002<br>\u308f\u3056\u308f\u3056\u4e8c\u4e57\u3057\u3066\u5e73\u65b9\u6839\u3092\u3068\u3063\u3066\u3044\u308b\u306e\u306f\u8db3\u3057\u5408\u308f\u305b\u305f\u969b\u306b\u30d7\u30e9\u30b9\u306e\u5024\u3068\u30de\u30a4\u30ca\u30b9\u306e\u5024\u3067\u6253\u3061\u6d88\u3057\u3042\u3063\u3066\u3057\u307e\u308f\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5f0f\u3092\u898b\u308b\u3068\u308f\u304b\u308b\u3088\u3046\u306b\u3001\u6a19\u6e96\u504f\u5dee\u306f\\(i=0\uff5en\\)\u307e\u3067\u5168\u3066\u306e\u30c7\u30fc\u30bf\u306e\u60c5\u5831\u304c\u5f0f\u306b\u5305\u542b\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<br>\u305d\u306e\u305f\u3081\u3001\u56db\u5206\u4f4d\u504f\u5dee\u306b\u6bd4\u3079\u3001\u30c7\u30fc\u30bf\u5168\u4f53\u306e\u7279\u6027\u3092\u53cd\u6620\u3067\u304d\u3066\u3044\u308b\u5206\u6563\u5ea6\u306e\u8a55\u4fa1\u6307\u6a19\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<br>\u3053\u308c\u304c\u4e00\u822c\u7684\u306a\u5206\u6563\u5ea6\u3068\u3057\u3066\u6a19\u6e96\u504f\u5dee\u304c\u5229\u7528\u3055\u308c\u308b\u7406\u7531\u306e\u4e00\u3064\u3067\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Python%E3%81%AB%E3%82%88%E3%82%8B%E6%A8%99%E6%BA%96%E5%81%8F%E5%B7%AE%E3%81%AE%E8%A8%88%E7%AE%97\"><\/span>Python\u306b\u3088\u308b\u6a19\u6e96\u504f\u5dee\u306e\u8a08\u7b97<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u3053\u308c\u3092python\u3067\u8a08\u7b97\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305a\u306f\u5b9f\u30c7\u30fc\u30bf\u306e\u6e96\u5099\u3067\u3059\u3002<\/p>\n\n\n\n<p> \u4eca\u56de\u3082kaggle\u304b\u3089\u30a2\u30dc\u30ab\u30c9\u306eAveragePrice\u306e\u30c7\u30fc\u30bf\u3092\u4f7f\u308f\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3059\u3002<a href=\"https:\/\/www.kaggle.com\/neuromusic\/avocado-prices\">https:\/\/www.kaggle.com\/neuromusic\/avocado-prices<\/a> <\/p>\n\n\n\n<p>\u63d0\u4f9b\u5143\uff1a <a href=\"https:\/\/hassavocadoboard.com\/\">https:\/\/hassavocadoboard.com\/<\/a> <\/p>\n\n\n\n<p>\u4e0a\u8a18\u30c7\u30fc\u30bf\u306eAveragePrice\u306b\u5bfe\u3057\u3001\u6a19\u6e96\u504f\u5dee\u3092\u8a08\u7b97\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30c7\u30fc\u30bf\u306e\u5148\u982d5\u884c\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5f62\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/obenkyolab.com\/wp-content\/uploads\/2019\/06\/image-8.png\" alt=\"\" class=\"wp-image-361\" width=\"182\" height=\"260\"\/><\/figure>\n\n\n\n<p><br>\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f\u304b\u3089\u6a19\u6e96\u504f\u5dee\u8a08\u7b97\u307e\u3067\u306e\u30b3\u30fc\u30c9\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: python; title: ; notranslate\" title=\"\">\nimport pandas as pd\n\n#\u30c7\u30fc\u30bf\u8aad\u307f\u8fbc\u307f\ndf = pd.read_csv(&#039;C:\\\\avocado.csv&#039;,engine  =&#039;python&#039;)\n\n#\u6a19\u6e96\u504f\u5dee\u306e\u8a08\u7b97\ndf&#x5B;&#039;AveragePrice&#039;].std() #0.40267655549555004\n<\/pre><\/div>\n\n\n<p>\u4e0a\u8a18\u3092\u898b\u3066\u308f\u304b\u308b\u901a\u308a\u3001\u305f\u3063\u305f\uff13\u884c\u3068\u3044\u3046\u30b3\u30fc\u30c9\u3067\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<br>\u6a19\u6e96\u504f\u5dee\u306e\u30c7\u30e1\u30ea\u30c3\u30c8\u3068\u3057\u3066\u306f\u56db\u5206\u4f4d\u504f\u5dee\u306b\u6bd4\u3079\u3066\u6f14\u7b97\u304c\u8907\u96d1\u3001\u3068\u3044\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u304c\u3001python\u306e\u3088\u3046\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u8c4a\u5bcc\u306a\u8a00\u8a9e\u3067\u5b9f\u88c5\u3059\u308b\u5834\u5408\u306b\u306f\u5168\u304f\u30c7\u30e1\u30ea\u30c3\u30c8\u3092\u611f\u3058\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%88%86%E6%95%A3\"><\/span>\u5206\u6563<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30c7\u30fc\u30bf\u306e\u5206\u6563\u5ea6\u3092\u6e2c\u308b\u6307\u6a19\u3068\u3057\u3066\u6a19\u6e96\u504f\u5dee\u306e\u307b\u304b\u306b\u5206\u6563\u304c\u3042\u308a\u307e\u3059\u3002<br>\u305f\u3060\u3001\u5206\u6563\u306f\u5358\u306b\u6a19\u6e96\u504f\u5dee\u306e2\u4e57\u3067\u5b9a\u7fa9\u3055\u308c\u307e\u3059\u3002<br>\u6a19\u6e96\u504f\u5dee\u3067\u306a\u304f\u3001\u5206\u6563\u3092\u6c42\u3081\u308b\u30e1\u30ea\u30c3\u30c8\u3068\u3057\u3066\u8a08\u7b97\u5f0f\u304c\u5358\u7d14\u3067\u3042\u308b\u3053\u3068\u304c\u8a00\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5206\u6563\u306e\u5b9a\u7fa9\u5f0f\u306f\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>$$s^2= \\frac{1}{n} \\sum_{i=0}^n  (\\overline{x}-x_i)^2 $$<\/p>\n\n\n\n<p>\u4e0a\u8a18\u306e\u53f3\u8fba\u3092\u5c55\u958b\u3059\u308b\u3068\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>$$\\frac{1}{n} \\sum_{i=0}^n x_i^2-2\\overline{x}\\frac{1}{n} \\sum_{i=0}^n x_i +\\overline{x}^2$$<\/p>\n\n\n\n<p>\u3053\u3053\u3067\u7b2c\u4e8c\u9805\u306b\u73fe\u308c\u308b\\( \\frac{1}{n} \\sum_{i=0}^n x_i \\)\u306f\u7b97\u8853\u5e73\u5747\\(\\overline{x}\\)\u3092\u8a08\u7b97\u3059\u308b\u5f0f\u3067\u3059\u306e\u3067\u3001\u7b2c\u4e8c\u9805\u306f\\(-2\\overline{x}^2\\)\u306b\u7f6e\u304d\u63db\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3064\u307e\u308a\u3001\u5206\u6563\u306e\u5f0f\u306f\u4ee5\u4e0b\u3067\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>$$s^2= \\frac{1}{n} \\sum_{i=0}^n x_i^2 -\\overline{x}^2$$<\/p>\n\n\n\n<p>\u5404\u30c7\u30fc\u30bf\u306e\u4e8c\u4e57\u5e73\u5747\u304b\u3089\u7b97\u8853\u5e73\u5747\u306e\u4e8c\u4e57\u3092\u5f15\u3051\u3070\u5206\u6563\u304c\u7b97\u51fa\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3092python\u3067\u66f8\u304f\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: python; title: ; notranslate\" title=\"\">\n#\u5404\u30c7\u30fc\u30bf\u306e\u4e8c\u4e57\u5e73\u5747\u3092\u8a08\u7b97\ndf&#x5B;&#039;AveragePrice&#039;].apply(lambda x:x*x).mean()-df&#x5B;&#039;AveragePrice&#039;].mean()*df&#x5B;&#039;AveragePrice&#039;].mean()\n\n#0.16213952301460144\n<\/pre><\/div>\n\n\n<p><\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u5b66\u8853\u7684\u306a\u89b3\u70b9\u304b\u3089\u306f\u5f0f\u304c\u304d\u308c\u3044\u306b\u306a\u308b\u3053\u3068\u304c\u5206\u6563\u306e\u7d20\u6674\u3089\u3057\u3044\u70b9\u3067\u306f\u3042\u308a\u307e\u3059\u3002<br>\u304c\u3001python\u3067\u5b9f\u30c7\u30fc\u30bf\u306e\u8a08\u7b97\u3092\u3059\u308b\u5834\u5408\u306fnumpy\u306evar()\u30e1\u30bd\u30c3\u30c9\u3067\u7c21\u5358\u306b\u8a08\u7b97\u3067\u304d\u308b\u306e\u3067\u3001\u5b9f\u88c5\u4e0a\u306f\u305d\u3053\u307e\u3067\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: python; title: ; notranslate\" title=\"\">\n#var\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u308b\u5206\u6563\u306e\u8a08\u7b97\ndf&#x5B;&#039;AveragePrice&#039;].var() #0.16214840834576077\n<\/pre><\/div>\n\n\n<p>\u5f53\u305f\u308a\u524d\u3067\u3059\u304c\u3001\u5f0f\u3092\u305d\u306e\u307e\u307e\u5f53\u3066\u306f\u3081\u8a08\u7b97\u3057\u3066\u3082\u3001var\u30e1\u30bd\u30c3\u30c9\u3067\u8a08\u7b97\u3057\u3066\u3082\u540c\u3058\u5024\u306b\u306a\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u7684 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