{"id":2455,"date":"2023-07-22T05:13:51","date_gmt":"2023-07-22T05:13:51","guid":{"rendered":"https:\/\/statorials.org\/id\/cdf-di-r-normal\/"},"modified":"2023-07-22T05:13:51","modified_gmt":"2023-07-22T05:13:51","slug":"cdf-di-r-normal","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/cdf-di-r-normal\/","title":{"rendered":"Cara menggunakan cdf normal di r (dengan contoh)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Anda dapat menggunakan metode berikut untuk bekerja dengan CDF (fungsi distribusi kumulatif) normal di R:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Metode 1: Hitung Probabilitas CDF Normal<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#calculate probability that random value is less than 1.96 in normal CDF<\/span>\npnorm(1.96)\n\n<span style=\"color: #008080;\">#calculate probability that random value is greater than 1.96 in normal CDF<\/span>\npnorm(1.96, <span style=\"color: #3366ff;\">lower.tail<\/span> = <span style=\"color: #008000;\">FALSE<\/span> )\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metode 2: Plot CDF Normal<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define sequence of x-values\n<\/span>x &lt;- seq(-4, 4, .01)\n\n<span style=\"color: #008080;\">#calculate normal CDF probabilities\n<\/span>prob &lt;- pnorm(x)\n \n<span style=\"color: #008080;\">#normal plot CDF\n<\/span>plot(x, prob, type=\" <span style=\"color: #ff0000;\">l<\/span> \")<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Contoh berikut menunjukkan cara menggunakan metode ini dalam praktik.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Contoh 1: Hitung<\/strong><\/span> <span style=\"color: #000000;\"><strong>probabilitas<\/strong><\/span> CDF normal<\/h3>\n<p> <span style=\"color: #000000;\">Kode berikut menunjukkan cara menghitung probabilitas suatu variabel acak bernilai kurang dari 1,96 dalam distribusi normal standar:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#calculate probability that random value is less than 1.96 in normal CDF<\/span>\npnorm(1.96)\n\n[1] 0.9750021\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Probabilitas suatu variabel acak mempunyai nilai kurang dari 1,96 dalam distribusi normal standar adalah <strong>0,975<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Kita juga dapat mencari probabilitas suatu variabel acak mempunyai nilai lebih besar dari 1,96 menggunakan argumen <strong>lower.tail<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#calculate probability that random value is greater than 1.96 in normal CDF<\/span>\npnorm(1.96, <span style=\"color: #3366ff;\">lower.tail<\/span> = <span style=\"color: #008000;\">FALSE<\/span> )\n\n[1] 0.0249979\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Dan kita dapat menggunakan sintaks berikut untuk mencari probabilitas suatu variabel acak mengambil nilai antara dua nilai dalam distribusi normal standar:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#calculate probability that random value takes on value between -1.96 and 1.96<\/span>\npnorm(1.96) - pnorm(-1.96)\n\n[1] 0.9500042\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Probabilitas suatu variabel acak bernilai antara -1,96 dan 1,96 dalam distribusi normal standar adalah <strong>0,95<\/strong> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Contoh 2: Merencanakan CDF Normal<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Kode berikut menunjukkan cara memplot CDF normal:<\/span><\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define sequence of x-values\n<\/span>x &lt;- seq(-4, 4, .01)\n\n<span style=\"color: #008080;\">#calculate normal CDF probabilities\n<\/span>prob &lt;- pnorm(x)\n \n<span style=\"color: #008080;\">#normal plot CDF\n<\/span>plot(x, prob, type=\" <span style=\"color: #ff0000;\">l<\/span> \")<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-21963 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/normcdf1.png\" alt=\"Plot CDF normal di R\" width=\"434\" height=\"398\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Sumbu x menunjukkan nilai variabel acak yang mengikuti distribusi normal standar, dan sumbu y menunjukkan kemungkinan suatu variabel acak mengambil nilai lebih kecil dari nilai yang ditunjukkan pada sumbu x.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Misalnya, jika kita melihat x = 1,96, kita akan melihat bahwa probabilitas kumulatif x kurang dari 1,96 adalah sekitar <strong>0,975:<\/strong><\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-21964 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/normalcdf4.png\" alt=\"\" width=\"436\" height=\"400\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Perhatikan bahwa Anda juga dapat mengubah estetika plot CDF normal:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define sequence of x-values\n<\/span>x &lt;- seq(-4, 4, .01)\n\n<span style=\"color: #008080;\">#calculate normal CDF probabilities\n<\/span>prob &lt;- pnorm(x)\n \n<span style=\"color: #008080;\">#normal plot CDF\n<\/span>plot(x, prob, type=' <span style=\"color: #ff0000;\">l<\/span> ', col=' <span style=\"color: #ff0000;\">blue<\/span> ', lwd= <span style=\"color: #008000;\">2<\/span> , main=' <span style=\"color: #ff0000;\">Normal CDF<\/span> ', ylab=' <span style=\"color: #ff0000;\">Cumulative Prob<\/span> ')<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-21965 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/normalcdf5.png\" alt=\"\" width=\"437\" height=\"428\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\"><strong>Terkait:<\/strong><\/span> <a href=\"https:\/\/statorials.org\/id\/fungsi-seq-di-r\/\" target=\"_blank\" rel=\"noopener\">Cara menggunakan fungsi seq di R<\/a><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Sumber daya tambahan<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Tutorial berikut menjelaskan cara melakukan operasi umum lainnya di R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/id\/plot-distribusi-normal-r\/\" target=\"_blank\" rel=\"noopener\">Cara memplot distribusi normal di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/skor-zr\/\" target=\"_blank\" rel=\"noopener\">Cara menghitung skor Z di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/dnorm-pnorm-rnorm-qnorm-di-r\/\" target=\"_blank\" rel=\"noopener\">Panduan untuk dnorm, pnorm, qnorm dan rnorm di R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Anda dapat menggunakan metode berikut untuk bekerja dengan CDF (fungsi distribusi kumulatif) normal di R: Metode 1: Hitung Probabilitas CDF Normal #calculate probability that random value is less than 1.96 in normal CDF pnorm(1.96) #calculate probability that random value is greater than 1.96 in normal CDF pnorm(1.96, lower.tail = FALSE ) Metode 2: Plot CDF [&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 - 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