{"id":1600,"date":"2023-07-25T17:12:43","date_gmt":"2023-07-25T17:12:43","guid":{"rendered":"https:\/\/statorials.org\/it\/tracciare-la-distribuzione-del-chi-quadrato-in-python\/"},"modified":"2023-07-25T17:12:43","modified_gmt":"2023-07-25T17:12:43","slug":"tracciare-la-distribuzione-del-chi-quadrato-in-python","status":"publish","type":"post","link":"https:\/\/statorials.org\/it\/tracciare-la-distribuzione-del-chi-quadrato-in-python\/","title":{"rendered":"Come tracciare una distribuzione chi-quadrato in python"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Per tracciare una distribuzione Chi-quadrato in Python, puoi utilizzare la seguente sintassi:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#x-axis ranges from 0 to 20 with .001 steps\n<\/span>x = np. <span style=\"color: #3366ff;\">arange<\/span> (0, 20, 0.001)\n\n<span style=\"color: #008080;\">#plot Chi-square distribution with 4 degrees of freedom\n<\/span>plt. <span style=\"color: #3366ff;\">plot<\/span> (x, chi2. <span style=\"color: #3366ff;\">pdf<\/span> (x, df= <span style=\"color: #008000;\">4<\/span> ))\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">L&#8217; <strong>x-<\/strong> array definisce l&#8217;intervallo dell&#8217;asse x e <strong>plt.plot()<\/strong> produce il grafico della distribuzione chi-quadrato con i gradi di libert\u00e0 specificati.<\/span><\/p>\n<p> <span style=\"color: #000000;\">I seguenti esempi mostrano come utilizzare queste funzioni nella pratica.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Esempio 1: tracciare una singola distribuzione chi-quadrato<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Il codice seguente mostra come tracciare una singola curva di distribuzione Chi-quadrato con 4 gradi di libert\u00e0<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n<span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n<span style=\"color: #008000;\">from<\/span> scipy. <span style=\"color: #3366ff;\">stats<\/span> <span style=\"color: #008000;\">import<\/span> chi2\n\n<span style=\"color: #008080;\">#x-axis ranges from 0 to 20 with .001 steps\n<\/span>x = np. <span style=\"color: #3366ff;\">arange<\/span> (0, 20, 0.001)\n\n<span style=\"color: #008080;\">#plot Chi-square distribution with 4 degrees of freedom\n<\/span>plt. <span style=\"color: #3366ff;\">plot<\/span> (x, chi2. <span style=\"color: #3366ff;\">pdf<\/span> (x, df= <span style=\"color: #008000;\">4<\/span> ))<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-15903\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/chicarrepython1.png\" alt=\"Tracciare la distribuzione del Chi Quadrato in Python\" width=\"381\" height=\"243\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Puoi anche modificare il colore e la larghezza della linea nel grafico:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>plt. <span style=\"color: #3366ff;\">plot<\/span> (x, chi2. <span style=\"color: #3366ff;\">pdf<\/span> (x, df= <span style=\"color: #008000;\">4<\/span> ), color=' <span style=\"color: #ff0000;\">red<\/span> ', linewidth= <span style=\"color: #008000;\">3<\/span> )<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-15901 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/chicarrepython2.png\" alt=\"\" width=\"394\" height=\"252\" srcset=\"\" sizes=\"\"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Esempio 2: tracciare pi\u00f9 distribuzioni chi-quadrato<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Il codice seguente mostra come tracciare pi\u00f9 curve di distribuzione chi quadrato con diversi gradi di libert\u00e0:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n<span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n<span style=\"color: #008000;\">from<\/span> scipy. <span style=\"color: #3366ff;\">stats<\/span> <span style=\"color: #008000;\">import<\/span> chi2\n\n<span style=\"color: #008080;\">#x-axis ranges from 0 to 20 with .001 steps\n<\/span>x = np. <span style=\"color: #3366ff;\">arange<\/span> (0, 20, 0.001)\n\n<span style=\"color: #008080;\">#define multiple Chi-square distributions\n<\/span>plt. <span style=\"color: #3366ff;\">plot<\/span> (x, chi2. <span style=\"color: #3366ff;\">pdf<\/span> (x, df= <span style=\"color: #008000;\">4<\/span> ), label=' <span style=\"color: #ff0000;\">df: 4<\/span> ')\nplt. <span style=\"color: #3366ff;\">plot<\/span> (x, chi2. <span style=\"color: #3366ff;\">pdf<\/span> (x, df= <span style=\"color: #008000;\">8<\/span> ), label=' <span style=\"color: #ff0000;\">df: 8<\/span> ') \nplt. <span style=\"color: #3366ff;\">plot<\/span> (x, chi2. <span style=\"color: #3366ff;\">pdf<\/span> (x, df= <span style=\"color: #008000;\">12<\/span> ), label=' <span style=\"color: #ff0000;\">df: 12<\/span> ') \n\n<span style=\"color: #008080;\">#add legend to plot\n<\/span>plt. <span style=\"color: #3366ff;\">legend<\/span> ()<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-15904 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/chicarrepython3.png\" alt=\"\" width=\"398\" height=\"263\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Sentiti libero di cambiare i colori delle linee e aggiungere un titolo e le etichette degli assi per completare il grafico:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n<span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n<span style=\"color: #008000;\">from<\/span> scipy. <span style=\"color: #3366ff;\">stats<\/span> <span style=\"color: #008000;\">import<\/span> chi2\n\n<span style=\"color: #008080;\">#x-axis ranges from 0 to 20 with .001 steps\n<\/span>x = np. <span style=\"color: #3366ff;\">arange<\/span> (0, 20, 0.001)\n\n<span style=\"color: #008080;\">#define multiple Chi-square distributions\n<\/span>plt. <span style=\"color: #3366ff;\">plot<\/span> (x, chi2. <span style=\"color: #3366ff;\">pdf<\/span> (x, df= <span style=\"color: #008000;\">4<\/span> ), label=' <span style=\"color: #ff0000;\">df: 4<\/span> ', color=' <span style=\"color: #ff0000;\">gold<\/span> ')\nplt. <span style=\"color: #3366ff;\">plot<\/span> (x, chi2. <span style=\"color: #3366ff;\">pdf<\/span> (x, df= <span style=\"color: #008000;\">8<\/span> ), label=' <span style=\"color: #ff0000;\">df: 8<\/span> ', color=' <span style=\"color: #ff0000;\">red<\/span> ')\nplt. <span style=\"color: #3366ff;\">plot<\/span> (x, chi2. <span style=\"color: #3366ff;\">pdf<\/span> (x, df= <span style=\"color: #008000;\">12<\/span> ), label=' <span style=\"color: #ff0000;\">df: 12<\/span> ', color=' <span style=\"color: #ff0000;\">pink<\/span> ') \n\n<span style=\"color: #008080;\">#add legend to plot\n<\/span>plt. <span style=\"color: #3366ff;\">legend<\/span> (title=' <span style=\"color: #ff0000;\">Parameters<\/span> ')\n\n<span style=\"color: #008080;\">#add axes labels and a title\n<\/span>plt. <span style=\"color: #3366ff;\">ylabel<\/span> (' <span style=\"color: #ff0000;\">Density<\/span> ')\nplt. <span style=\"color: #3366ff;\">xlabel<\/span> (' <span style=\"color: #ff0000;\">x<\/span> ')\nplt. <span style=\"color: #3366ff;\">title<\/span> (' <span style=\"color: #ff0000;\">Chi-Square Distributions<\/span> ', fontsize= <span style=\"color: #008000;\">14<\/span> )<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-15905\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/chicarrepython4-2.png\" alt=\"Tracciare distribuzioni chi-quadrate multiple in Python\" width=\"435\" height=\"298\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Fare riferimento alla <a href=\"https:\/\/matplotlib.org\/stable\/api\/_as_gen\/matplotlib.pyplot.plot.html\" target=\"_blank\" rel=\"noopener\">documentazione matplotlib<\/a> per una spiegazione dettagliata della funzione <strong>plt.plot()<\/strong> .<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Per tracciare una distribuzione Chi-quadrato in Python, puoi utilizzare la seguente sintassi: #x-axis ranges from 0 to 20 with .001 steps x = np. arange (0, 20, 0.001) #plot Chi-square distribution with 4 degrees of freedom plt. plot (x, chi2. pdf (x, df= 4 )) L&#8217; x- array definisce l&#8217;intervallo dell&#8217;asse x e plt.plot() produce [&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":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Come tracciare una distribuzione chi-quadrato in Python<\/title>\n<meta name=\"description\" content=\"Questo tutorial spiega come tracciare una distribuzione Chi-quadrato in Python, con diversi esempi.\" \/>\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\/it\/tracciare-la-distribuzione-del-chi-quadrato-in-python\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Come tracciare una distribuzione chi-quadrato in Python\" \/>\n<meta property=\"og:description\" content=\"Questo tutorial spiega come tracciare una distribuzione Chi-quadrato in Python, con diversi esempi.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/it\/tracciare-la-distribuzione-del-chi-quadrato-in-python\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-25T17:12:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/chicarrepython1.png\" \/>\n<meta name=\"author\" content=\"Benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/it\/tracciare-la-distribuzione-del-chi-quadrato-in-python\/\",\"url\":\"https:\/\/statorials.org\/it\/tracciare-la-distribuzione-del-chi-quadrato-in-python\/\",\"name\":\"Come tracciare una distribuzione chi-quadrato in Python\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/it\/#website\"},\"datePublished\":\"2023-07-25T17:12:43+00:00\",\"dateModified\":\"2023-07-25T17:12:43+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/0896f191fb9fb019f2cd8623112cb3ae\"},\"description\":\"Questo tutorial spiega come tracciare una distribuzione Chi-quadrato in Python, con diversi esempi.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/it\/tracciare-la-distribuzione-del-chi-quadrato-in-python\/#breadcrumb\"},\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/it\/tracciare-la-distribuzione-del-chi-quadrato-in-python\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/it\/tracciare-la-distribuzione-del-chi-quadrato-in-python\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Casa\",\"item\":\"https:\/\/statorials.org\/it\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Come tracciare una distribuzione chi-quadrato in python\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/it\/#website\",\"url\":\"https:\/\/statorials.org\/it\/\",\"name\":\"Statorials\",\"description\":\"La tua guida all&#039;alfabetizzazione statistica!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/it\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"it-IT\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/0896f191fb9fb019f2cd8623112cb3ae\",\"name\":\"Benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"it-IT\",\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/it\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/it\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin anderson\"},\"description\":\"Ciao, sono Benjamin, un professore di statistica in pensione diventato insegnante dedicato di Statorials. 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