{"id":4521,"date":"2023-07-10T11:00:23","date_gmt":"2023-07-10T11:00:23","guid":{"rendered":"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/"},"modified":"2023-07-10T11:00:23","modified_gmt":"2023-07-10T11:00:23","slug":"sas-plot-significa-con-barre-di-errore-standard","status":"publish","type":"post","link":"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/","title":{"rendered":"Sas: come tracciare le medie con le barre di errore standard"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u00c8 possibile utilizzare la seguente sintassi in SAS per creare un grafico dei valori medi con barre di errore standard per gruppo:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*calculate mean and standard error of points for each team*\/\n<\/span><span style=\"color: #800080;\">proc sql<\/span> ;\n<span style=\"color: #3366ff;\">create table<\/span> groupPlot <span style=\"color: #3366ff;\">as<\/span>\n<span style=\"color: #3366ff;\">select<\/span> \n    team, \n    mean(points) <span style=\"color: #3366ff;\">as<\/span> meanPoints, \n    mean(points) - <span style=\"color: #3366ff;\">stderr<\/span> (points) <span style=\"color: #3366ff;\">as<\/span> lowStdPoints,    \n    mean(points) + <span style=\"color: #3366ff;\">stderr<\/span> (points) <span style=\"color: #3366ff;\">as<\/span> highStdPoints\n<span style=\"color: #3366ff;\">from<\/span> my_data\n<span style=\"color: #3366ff;\">group by<\/span> team;\n<span style=\"color: #800080;\">quit<\/span> ;\n\n<span style=\"color: #008000;\">\/*create plot with mean and standard error bars of points for each team*\/\n<\/span><span style=\"color: #800080;\">proc sgplot<\/span> <span style=\"color: #3366ff;\">data<\/span> =groupPlot;\n<span style=\"color: #3366ff;\">scatter<\/span> <span style=\"color: #3366ff;\">x<\/span> =team <span style=\"color: #3366ff;\">y<\/span> =meanPoints \/ \n    <span style=\"color: #3366ff;\">yerrorlower<\/span> =lowStdPoints <span style=\"color: #3366ff;\">yerrorupper<\/span> =highStdPoints <span style=\"color: #3366ff;\">group<\/span> =team;\n<span style=\"color: #3366ff;\">series<\/span> <span style=\"color: #3366ff;\">x<\/span> =team <span style=\"color: #3366ff;\">y<\/span> =meanPoints \/ <span style=\"color: #3366ff;\">group<\/span> =team;\n<span style=\"color: #800080;\">run<\/span> ;\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Questo esempio particolare utilizza <strong>PROC SQL<\/strong> per calcolare il valore medio della variabile <strong>punti<\/strong> , raggruppata in base alla variabile <strong>squadra<\/strong> in un set di dati.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Utilizziamo quindi <strong>PROC SGPLOT<\/strong> per creare un grafico che mostra il valore medio della variabile <strong>punti<\/strong> insieme alle barre di errore standard, raggruppate per variabile <strong>della squadra<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">L&#8217;esempio seguente mostra come utilizzare questa sintassi nella pratica.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Esempio: tracciamento delle medie con barre di errore standard in SAS<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Supponiamo di avere il seguente set di dati contenente informazioni sui punti segnati da giocatori di basket di diverse squadre:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*create dataset*\/<\/span><span style=\"color: #800080;\"><span style=\"color: #000000;\"><span style=\"color: #800080;\">\ndata<\/span> my_data;\n    <span style=\"color: #3366ff;\">input<\/span> team $points;\n    <span style=\"color: #3366ff;\">datalines<\/span> ;\nAt 29\nAt 23\nAt 20\nAt 21\nAt 33\nB14\nB 13\nB17\nB14\nB15\nC 21\nC22\nC 20\nC25\nC24\n;\n<span style=\"color: #800080;\">run<\/span> ;\n\n<\/span><span style=\"color: #008000;\">\/*view dataset*\/\n<\/span><span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> =my_data;<\/span><\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-35311 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sg1.png\" alt=\"\" width=\"163\" height=\"387\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Supponiamo di voler creare un grafico che mostri il valore medio <strong>dei punti<\/strong> insieme alle barre di errore standard per ciascuna <strong>squadra<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Possiamo usare la seguente sintassi per fare questo:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*calculate mean and standard error of points for each team*\/\n<\/span><span style=\"color: #800080;\">proc sql<\/span> ;\n<span style=\"color: #3366ff;\">create table<\/span> groupPlot <span style=\"color: #3366ff;\">as<\/span>\n<span style=\"color: #3366ff;\">select<\/span> \n    team, \n    mean(points) <span style=\"color: #3366ff;\">as<\/span> meanPoints, \n    mean(points) - <span style=\"color: #3366ff;\">stderr<\/span> (points) <span style=\"color: #3366ff;\">as<\/span> lowStdPoints,    \n    mean(points) + <span style=\"color: #3366ff;\">stderr<\/span> (points) <span style=\"color: #3366ff;\">as<\/span> highStdPoints\n<span style=\"color: #3366ff;\">from<\/span> my_data\n<span style=\"color: #3366ff;\">group by<\/span> team;\n<span style=\"color: #800080;\">quit<\/span> ;\n\n<span style=\"color: #008000;\">\/*create plot with mean and standard error bars of points for each team*\/\n<\/span><span style=\"color: #800080;\">proc sgplot<\/span> <span style=\"color: #3366ff;\">data<\/span> =groupPlot;\n<span style=\"color: #3366ff;\">scatter<\/span> <span style=\"color: #3366ff;\">x<\/span> =team <span style=\"color: #3366ff;\">y<\/span> =meanPoints \/ \n    <span style=\"color: #3366ff;\">yerrorlower<\/span> =lowStdPoints <span style=\"color: #3366ff;\">yerrorupper<\/span> =highStdPoints <span style=\"color: #3366ff;\">group<\/span> =team;\n<span style=\"color: #3366ff;\">series<\/span> <span style=\"color: #3366ff;\">x<\/span> =team <span style=\"color: #3366ff;\">y<\/span> =meanPoints \/ <span style=\"color: #3366ff;\">group<\/span> =team;\n<span style=\"color: #800080;\">run<\/span> ;<\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-35312 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sg2.png\" alt=\"\" width=\"616\" height=\"465\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">I piccoli cerchi mostrano il valore medio <strong>dei punti<\/strong> per ciascuna <strong>squadra<\/strong> e le barre che si estendono dai cerchi mostrano l&#8217;errore standard dei <strong>punti<\/strong> per ciascuna <strong>squadra<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Possiamo anche stampare la tabella che abbiamo creato utilizzando <strong>PROC SQL<\/strong> per vedere i valori effettivi dell&#8217;errore medio e standard:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*print mean and standard error of points for each team*\/\n<\/span><span style=\"color: #000000;\"><span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> =groupPlot;<\/span>\n<\/strong><\/span><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-35313 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sg3.png\" alt=\"\" width=\"408\" height=\"112\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">I valori di questa tabella corrispondono a quelli mostrati nel grafico sopra.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Risorse addizionali<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">I seguenti tutorial spiegano come creare altri grafici in SAS:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/it\/camera-di-equilibrio-a-traccia-lineare\/\" target=\"_blank\" rel=\"noopener\">Come creare grafici a linee in SAS<\/a><br \/> <a href=\"https:\/\/statorials.org\/it\/camera-di-equilibrio-dei-baffi-della-scatola-per-gruppo\/\" target=\"_blank\" rel=\"noopener\">Come creare boxplot per gruppo in SAS<\/a><br \/> <a href=\"https:\/\/statorials.org\/it\/nuvola-di-punti-con-retta-di-regressione-sas\/\" target=\"_blank\" rel=\"noopener\">Come creare un grafico a dispersione con una linea di regressione in SAS<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c8 possibile utilizzare la seguente sintassi in SAS per creare un grafico dei valori medi con barre di errore standard per gruppo: \/*calculate mean and standard error of points for each team*\/ proc sql ; create table groupPlot as select team, mean(points) as meanPoints, mean(points) &#8211; stderr (points) as lowStdPoints, mean(points) + stderr (points) as [&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>SAS: come tracciare le medie con le barre di errore standard - Statorials<\/title>\n<meta name=\"description\" content=\"Questo tutorial spiega come tracciare i valori medi con le barre di errore standard in SAS, con un esempio.\" \/>\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\/sas-plot-significa-con-barre-di-errore-standard\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SAS: come tracciare le medie con le barre di errore standard - Statorials\" \/>\n<meta property=\"og:description\" content=\"Questo tutorial spiega come tracciare i valori medi con le barre di errore standard in SAS, con un esempio.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-10T11:00:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sg1.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\/sas-plot-significa-con-barre-di-errore-standard\/\",\"url\":\"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/\",\"name\":\"SAS: come tracciare le medie con le barre di errore standard - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/it\/#website\"},\"datePublished\":\"2023-07-10T11:00:23+00:00\",\"dateModified\":\"2023-07-10T11:00:23+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/0896f191fb9fb019f2cd8623112cb3ae\"},\"description\":\"Questo tutorial spiega come tracciare i valori medi con le barre di errore standard in SAS, con un esempio.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/#breadcrumb\"},\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Casa\",\"item\":\"https:\/\/statorials.org\/it\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Sas: come tracciare le medie con le barre di errore standard\"}]},{\"@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. Con una vasta esperienza e competenza nel campo della statistica, sono ansioso di condividere le mie conoscenze per potenziare gli studenti attraverso Statorials. Scopri di pi\u00f9\",\"sameAs\":[\"https:\/\/statorials.org\/it\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"SAS: come tracciare le medie con le barre di errore standard - Statorials","description":"Questo tutorial spiega come tracciare i valori medi con le barre di errore standard in SAS, con un esempio.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/","og_locale":"it_IT","og_type":"article","og_title":"SAS: come tracciare le medie con le barre di errore standard - Statorials","og_description":"Questo tutorial spiega come tracciare i valori medi con le barre di errore standard in SAS, con un esempio.","og_url":"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/","og_site_name":"Statorials","article_published_time":"2023-07-10T11:00:23+00:00","og_image":[{"url":"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sg1.png"}],"author":"Benjamin anderson","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Benjamin anderson","Est. reading time":"2 minuti"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/","url":"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/","name":"SAS: come tracciare le medie con le barre di errore standard - Statorials","isPartOf":{"@id":"https:\/\/statorials.org\/it\/#website"},"datePublished":"2023-07-10T11:00:23+00:00","dateModified":"2023-07-10T11:00:23+00:00","author":{"@id":"https:\/\/statorials.org\/it\/#\/schema\/person\/0896f191fb9fb019f2cd8623112cb3ae"},"description":"Questo tutorial spiega come tracciare i valori medi con le barre di errore standard in SAS, con un esempio.","breadcrumb":{"@id":"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/#breadcrumb"},"inLanguage":"it-IT","potentialAction":[{"@type":"ReadAction","target":["https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/statorials.org\/it\/sas-plot-significa-con-barre-di-errore-standard\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Casa","item":"https:\/\/statorials.org\/it\/"},{"@type":"ListItem","position":2,"name":"Sas: come tracciare le medie con le barre di errore standard"}]},{"@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. Con una vasta esperienza e competenza nel campo della statistica, sono ansioso di condividere le mie conoscenze per potenziare gli studenti attraverso Statorials. Scopri di pi\u00f9","sameAs":["https:\/\/statorials.org\/it"]}]}},"yoast_meta":{"yoast_wpseo_title":"","yoast_wpseo_metadesc":"","yoast_wpseo_canonical":""},"_links":{"self":[{"href":"https:\/\/statorials.org\/it\/wp-json\/wp\/v2\/posts\/4521"}],"collection":[{"href":"https:\/\/statorials.org\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/statorials.org\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/statorials.org\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/statorials.org\/it\/wp-json\/wp\/v2\/comments?post=4521"}],"version-history":[{"count":0,"href":"https:\/\/statorials.org\/it\/wp-json\/wp\/v2\/posts\/4521\/revisions"}],"wp:attachment":[{"href":"https:\/\/statorials.org\/it\/wp-json\/wp\/v2\/media?parent=4521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/statorials.org\/it\/wp-json\/wp\/v2\/categories?post=4521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/statorials.org\/it\/wp-json\/wp\/v2\/tags?post=4521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}