{"id":2306,"date":"2021-04-01T20:20:46","date_gmt":"2021-04-01T20:20:46","guid":{"rendered":"https:\/\/ricovictor.com\/?p=2306"},"modified":"2026-01-29T21:52:14","modified_gmt":"2026-01-29T21:52:14","slug":"distribucion-normal-en-r","status":"publish","type":"post","link":"https:\/\/ricovictor.com\/index.php\/2021\/04\/01\/distribucion-normal-en-r\/","title":{"rendered":"Distribuci\u00f3n Normal en R"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2306\" class=\"elementor elementor-2306\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2f69fd5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2f69fd5\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b661284\" data-id=\"b661284\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2cc16288 elementor-widget elementor-widget-text-editor\" data-id=\"2cc16288\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span class=\"style-scope yt-formatted-string\" dir=\"auto\">La <strong>Distribuci\u00f3n <\/strong><\/span><strong>Normal<\/strong><span class=\"style-scope yt-formatted-string\" dir=\"auto\">\u200b<\/span><span class=\"style-scope yt-formatted-string\" dir=\"auto\"> es la m\u00e1s importante de las <strong><a href=\"https:\/\/ricovictor.com\/index.php\/2021\/03\/21\/distribucion-de-poisson-en-r\/\">distribuciones<\/a> continuas<\/strong>, debido a la gran cantidad de fen\u00f3menos reales en la que se usa.<\/span><span class=\"style-scope yt-formatted-string\" dir=\"auto\"> Esta distribuci\u00f3n tambi\u00e9n se conoce como gaussiana o de <\/span>Gauss<span class=\"style-scope yt-formatted-string\" dir=\"auto\">\u200b<\/span><span class=\"style-scope yt-formatted-string\" dir=\"auto\">, en honor a su descubridor. <\/span><\/p><p><span class=\"style-scope yt-formatted-string\" dir=\"auto\">SI nos fijamos en su forma cabe destacar que es sim\u00e9trica y tiene forma de campana. Adem\u00e1s, est\u00e1 delimitada por solamente 2 par\u00e1metros, uno es la media aritm\u00e9tica y el otro la desviaci\u00f3n t\u00edpica.<\/span><\/p><p><span class=\"style-scope yt-formatted-string\" dir=\"auto\"> De manera que definiremos la variable aleatoria X y su distribuci\u00f3n como sigue: <\/span><\/p><p><strong><span class=\"style-scope yt-formatted-string\" dir=\"auto\">X \u2192 N(\u03bc, \u03c3) <\/span><\/strong><\/p><p><span class=\"style-scope yt-formatted-string\" dir=\"auto\">En este tutorial podr\u00e1s ver ejemplos del uso de este tipo de distribuci\u00f3n apoy\u00e1ndonos en el software R. Debajo tienen el c\u00f3digo con los ejemplos<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e311b9 elementor-view-stacked elementor-shape-circle elementor-widget elementor-widget-icon\" data-id=\"3e311b9\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<i aria-hidden=\"true\" class=\"far fa-hand-point-down\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1ac45ac4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1ac45ac4\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-534dd613\" data-id=\"534dd613\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-23b9d8d4 elementor-widget elementor-widget-video\" data-id=\"23b9d8d4\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=zEskenXURD4&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-75bc8c2e elementor-widget elementor-widget-spacer\" data-id=\"75bc8c2e\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-540bbe14 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"540bbe14\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-449073ad\" data-id=\"449073ad\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-42c639ee elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"42c639ee\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<i aria-hidden=\"true\" class=\"far fa-hand-point-down\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f19685d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f19685d\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8db0716\" data-id=\"8db0716\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-969fc9d elementor-widget elementor-widget-text-editor\" data-id=\"969fc9d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h4><strong>C\u00d3DIGO EN R DEL V\u00cdDEO<\/strong><\/h4><p>\u00a0<\/p><p>\u00a0<\/p><p>## DISTRIBUCI\u00d3N NORMAL EN R<\/p><p># Ejemplo n\u00fameros aleatorios<\/p><p>R_normal &lt;- rnorm(500, mean = 0, sd = 1)<br \/>R_normal<\/p><p>hist(R_normal)<\/p><p>R_normal &lt;- rnorm(500, mean = 2, sd = 2.5)<\/p><p>hist(R_normal)<\/p><p>####<\/p><p>#pnorm(q, mean = ?, sd = ?)<\/p><p>#qnorm(p, mean = ?, sd = ?)<\/p><p>## Ejemplo 1<\/p><p>## El nivel de colesterol en una persona adulta sana sigue<br \/># una Distribuci\u00f3n normal N(192,12)<br \/># Calcula la probabilidad de que una persona tenga un nivel de Colesterol<\/p><p># A) Superior a 200<\/p><p># P ( X&gt;200) = 1 &#8211; P(X&lt;=200)<\/p><p>1 &#8211; pnorm(200, mean = 192, sd = 12)<\/p><p>pnorm(200, mean = 192, sd = 12) #P X&gt;200<\/p><p>1-0.7475075<\/p><p># B) entre 180 y 220<\/p><p># P( 180 &lt;= X &lt;= 220)<\/p><p># P[X \u2264 220] \u2013 P[ X \u2264 180]<\/p><p>pnorm(c(220, 180), mean = 192, sd = 12)<\/p><p>0.9901847- 0.1586553<\/p><p>0.8315294<\/p><p># c la cantidad m\u00ednima de colesterol que tiene el 30 que m\u00e1s tienen<\/p><p># percentil 70<\/p><p>qnorm(0.7, mean = 192, sd = 12)<\/p><p>198.2928<\/p><p>#### EJEMPLO 2<\/p><p># la edad de un grupo de personas sigue una N(35,10)<\/p><p># Calcula la prob de que una persona al azar tenga<\/p><p>#A) M\u00e1s de 40 a\u00f1os &#8212; P x &gt; 40<\/p><p># = 1- p(X&lt;=40)<\/p><p>1- pnorm(40,35,10)<\/p><p>0.3085375<\/p><p>#B)Entre 23 y 47 a\u00f1os. P(23&lt; X &lt; 47)<\/p><p># P[X \u2264 47] \u2013 P[ X \u226423]<\/p><p>pnorm(c(47, 23), mean = 35, sd = 10)<\/p><p>0.8849303 &#8211; 0.1150697<\/p><p>0.7698606<\/p><p># C) Di entre qu\u00e9 edades estar\u00e1 comprendido el 50 % central de la distribuci\u00f3n<\/p><p>qnorm(0.30, mean = 35, sd = 10)<\/p><p>qnorm(0.70, mean = 35, sd = 10)<\/p><p>#\u2666entre 28 a\u00f1os y 42<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>La Distribuci\u00f3n Normal\u200b es la m\u00e1s importante de las distribuciones continuas, debido a la gran cantidad de fen\u00f3menos reales en la que se usa. Esta distribuci\u00f3n tambi\u00e9n se conoce como gaussiana o de Gauss\u200b, en honor a su descubridor. SI nos fijamos en su forma cabe destacar que es sim\u00e9trica y tiene forma de campana. &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/ricovictor.com\/index.php\/2021\/04\/01\/distribucion-normal-en-r\/\"> <span class=\"screen-reader-text\">Distribuci\u00f3n Normal en R<\/span> Leer m\u00e1s &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":2308,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[2],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Distribuci\u00f3n Normal en R - V\u00edctor A. 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