{"id":688,"date":"2023-07-29T02:19:30","date_gmt":"2023-07-29T02:19:30","guid":{"rendered":"https:\/\/statorials.org\/nl\/kaart-rekenmachine\/"},"modified":"2023-07-29T02:19:30","modified_gmt":"2023-07-29T02:19:30","slug":"kaart-rekenmachine","status":"publish","type":"post","link":"https:\/\/statorials.org\/nl\/kaart-rekenmachine\/","title":{"rendered":"Mape-rekenmachine"},"content":{"rendered":"<p><script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/mathjs\/5.1.1\/math.js\"><\/script><script src=\"https:\/\/cdn.jsdelivr.net\/npm\/jstat@latest\/dist\/jstat.min.js\"><\/script><\/p>\n<style>\n@import url('https:\/\/fonts.googleapis.com\/css?family=Droid+Serif|Raleway');<\/p>\n<p>h1 {\ntext-align: center;\nfont-size: 50px;\nmargin-bottom: 0px;\nfont-family: 'Raleway', serif;\n}<\/p>\n<p>p {\ncolor: black;\ntext-align: center;\nmargin-bottom: 15px;\nmargin-top: 15px;\nfont-family: 'Raleway', sans-serif;\n}<\/p>\n<p>#words {\npadding-left: 30px;\ncolor: black;\nfont-family: Raleway;\nmax-width: 550px;\nmargin: 25px auto;\nline-height: 1.75;\n}<\/p>\n<p>#words_summary {\npadding-left: 70px;\ncolor: black;\nfont-family: Raleway;\nmax-width: 550px;\nmargin: 25px auto;\nline-height: 1.75;\n}<\/p>\n<p>#words_text {\ncolor: black;\nfont-family: Raleway;\nmax-width: 550px;\nmargin: 25px auto;\nline-height: 1.75;\n}<\/p>\n<p>#words_text_area {\ndisplay:inline-block;\ncolor: black;\nfont-family: Raleway;\nmax-width: 550px;\nmargin: 25px auto;\nline-height: 1.75;\npadding-left: 100px;\n}<\/p>\n<p>#calcTitle {\ntext-align: center;\nfont-size: 20px;\nmargin-bottom: 0px;\nfont-family: 'Raleway', serif;\n}<\/p>\n<p>#hr_top {\nwidth: 30%;\nmargin-bottom: 0px;\nborder: none;\nheight: 2px;\ncolor: black;\nbackground-color: black;\n}<\/p>\n<p>#hr_bottom {\nwidth: 30%;\nmargin-top: 15px;\nborder: none;\nheight: 2px;\ncolor: black;\nbackground-color: black;\n}<\/p>\n<p>#words label, input {\n    display: inline-block;\n    vertical-align: baseline;\n    width: 350px;\n}<\/p>\n<p>    #button {\n      border: 1px solid;\n      border-radius: 10px;\n      margin-top: 20px;<\/p>\n<p>      cursor: pointer;\n      outline: none;\n      background-color: white;\n      color: black;\n      font-family: 'Work Sans', sans-serif;\n      border: 1px solid grey;\n      \/* Green *\/\n    }<\/p>\n<p>    #button:hover {\n      background-color: #f6f6f6;\n      border: 1px solid black;\n    }<\/p>\n<p>\t#words_table {\ncolor: black;\nfont-family: Raleway;\nmax-width: 350px;\nmargin: 25px auto;\nline-height: 1.75;\n}<\/p>\n<p>#summary_table {\ncolor: black;\nfont-family: Raleway;\nmax-width: 550px;\nmargin: 25px auto;\nline-height: 1.75;\npadding-left: 20px;\n}<\/p>\n<p>\t.label_radio {\n\ttext-align: center;\n    }<\/p>\n<p>td, tr, th {\n    border: 1px solid black;\n}\ntable {\n    border-collapse: collapse;\n}\ntd, th {\n    min-width: 50px;\n    height: 21px;\n}\n    .label_radio {\n\ttext-align: center;\n}<\/p>\n<p>#text_area_input {\n\tpadding-left: 35%;\n\tfloat: left;\n}<\/p>\n<p>svg:not(:root) {\n  overflow: visible;\n}<\/p>\n<\/style>\n<div id=\"words\">\n<p style=\"text-align: left\"><b>Mean Absolute Percentage Error (MAPE)<\/b> is een metriek die ons vertelt hoe ver onze voorspelde waarden gemiddeld verwijderd zijn van onze waargenomen waarden in een regressieanalyse. Het wordt als volgt berekend:<\/p>\n<p style=\"text-align: left\"> <b>MAPE<\/b> = (1\/n) * \u03a3(|O <sub>ik<\/sub> \u2013 P <sub>ik<\/sub> |\/O <sub>ik<\/sub> * 100<\/p>\n<p style=\"text-align: left\"> Goud:<\/p>\n<ul>\n<li> \u03a3 is een mooi symbool dat \u2018som\u2019 betekent<\/li>\n<li> <sub>Pi<\/sub> is de voorspelde waarde voor de <sup>i-<\/sup> de waarneming<\/li>\n<li> O <sub>i<\/sub> is de waargenomen waarde voor de <sup>i-<\/sup> de waarneming<\/li>\n<li> n is de steekproefomvang<\/li>\n<\/ul>\n<p style=\"text-align: left\"> Om de MAPE voor een regressie te vinden, voert u eenvoudigweg een lijst met waargenomen waarden en voorspelde waarden in de twee onderstaande vakken in en klikt u vervolgens op de knop &#8222;Berekenen&#8220;:<\/p>\n<\/div>\n<p style=\"text-align: center\"> <b>Waargenomen waarden:<\/b><\/p>\n<div id=\"words_table\"><textarea id=\"input_data_obs\" name=\"x\" rows=\"5\" cols=\"40\"> 34, 37, 44, 47, 48, 48, 46, 43, 32, 27, 26, 24<\/textarea><\/div>\n<p style=\"text-align: center\"> <b>Voorspelde waarden:<\/b><\/p>\n<div id=\"words_table\"><textarea id=\"input_data_pred\" name=\"x\" rows=\"5\" cols=\"40\"> 37, 40, 46, 44, 46, 50, 45, 44, 34, 30, 22, 23 <\/textarea><\/div>\n<div id=\"words_table\"><input type=\"button\" id=\"button\" onclick=\"calc()\" value=\"Calculate\"><\/div>\n<div id=\"words_table\">\n<p style=\"text-align: center\"> <b>MAPE = <span id=\"RMSE\">2,43242<\/span> %<\/b><\/p>\n<\/div>\n<div id=\"words_table\">\n<p style=\"text-align: center\"><span id=\"error_msg\"><\/span><\/p>\n<\/div>\n<p><script><\/p>\n<p>function calc() {<\/p>\n<p>var obs = document.getElementById('input_data_obs').value.split(',').map(Number);<\/p>\n<p>var pred = document.getElementById('input_data_pred').value.split(',').map(Number);<\/p>\n<p>\/\/check that both lists are equal length\nif (obs.length - pred.length == 0) {\ndocument.getElementById('error_msg').innerHTML = '';\n\/\/calculate RMSE\nlet error = 0\n\tfor (let i = 0; i < obs.length; i++) {\n\t\terror += Math.abs(obs[i] - pred[i]) \/ obs[i]\n\t}\n\nvar RMSE = error \/ obs.length * 100;\ndocument.getElementById('RMSE').innerHTML = RMSE.toFixed(5);\n}\n\nelse {\n document.getElementById('RMSE').innerHTML = '';\n document.getElementById('error_msg').innerHTML = 'The two lists must be of equal length.';\n}\n\t  \n} \/\/end calc function\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mean Absolute Percentage Error (MAPE) is een metriek die ons vertelt hoe ver onze voorspelde waarden gemiddeld verwijderd zijn van onze waargenomen waarden in een regressieanalyse. Het wordt als volgt berekend: MAPE = (1\/n) * \u03a3(|O ik \u2013 P ik |\/O ik * 100 Goud: \u03a3 is een mooi symbool dat \u2018som\u2019 betekent Pi is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-688","post","type-post","status-publish","format-standard","hentry","category-gids"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>MAPE-calculator - Statorialen<\/title>\n<meta name=\"description\" content=\"Deze rekenmachine vindt de MAPE voor een lijst met waargenomen en voorspelde waarden.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/nl\/kaart-rekenmachine\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MAPE-calculator - Statorialen\" \/>\n<meta property=\"og:description\" content=\"Deze rekenmachine vindt de MAPE voor een lijst met waargenomen en voorspelde waarden.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/nl\/kaart-rekenmachine\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-29T02:19:30+00:00\" \/>\n<meta name=\"author\" content=\"Dr.benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Verfasst von\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr.benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u00a0Minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/nl\/kaart-rekenmachine\/\",\"url\":\"https:\/\/statorials.org\/nl\/kaart-rekenmachine\/\",\"name\":\"MAPE-calculator - Statorialen\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/nl\/#website\"},\"datePublished\":\"2023-07-29T02:19:30+00:00\",\"dateModified\":\"2023-07-29T02:19:30+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\"},\"description\":\"Deze rekenmachine vindt de MAPE voor een lijst met waargenomen en voorspelde waarden.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/nl\/kaart-rekenmachine\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/nl\/kaart-rekenmachine\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/nl\/kaart-rekenmachine\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Thuis\",\"item\":\"https:\/\/statorials.org\/nl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Mape-rekenmachine\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/nl\/#website\",\"url\":\"https:\/\/statorials.org\/nl\/\",\"name\":\"Statorials\",\"description\":\"Uw gids voor statistische competentie\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/nl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"de\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\",\"name\":\"Dr.benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/image\/\",\"url\":\"http:\/\/statorials.org\/nl\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"http:\/\/statorials.org\/nl\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr.benjamin anderson\"},\"description\":\"Ik ben Benjamin, een gepensioneerde hoogleraar statistiek die nu een toegewijde Statorials-lesgever is. 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