{"id":499,"date":"2023-07-29T17:13:41","date_gmt":"2023-07-29T17:13:41","guid":{"rendered":"https:\/\/statorials.org\/id\/simpangan-baku-di-r\/"},"modified":"2023-07-29T17:13:41","modified_gmt":"2023-07-29T17:13:41","slug":"simpangan-baku-di-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/simpangan-baku-di-r\/","title":{"rendered":"Cara menghitung deviasi standar dalam r (dengan contoh)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><span style=\"color: #000000;\">Anda dapat menggunakan sintaks berikut untuk menghitung deviasi standar suatu vektor di R:<\/span><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>sd(x)\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Perhatikan bahwa rumus ini menghitung simpangan baku sampel menggunakan rumus berikut:<\/span><\/p>\n<p style=\"text-align: center;\"> <span style=\"color: #000000;\">\u221a <span style=\"border-top: 1px solid black;\">\u03a3 ( <sub>xi<\/sub> \u2013 \u03bc) <sup>2<\/sup> \/ (n-1)<\/span><\/span><\/p>\n<p> <span style=\"color: #000000;\">Emas:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>\u03a3<\/strong> : Simbol mewah yang berarti \u201cjumlah\u201d<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>x <sub>i<\/sub><\/strong> : nilai <sup>ke-i<\/sup> dari kumpulan data<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>\u03bc<\/strong> : Nilai rata-rata kumpulan data<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>n:<\/strong> Ukuran sampel<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Contoh berikut menunjukkan cara menggunakan fungsi ini dalam praktiknya.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Contoh 1: Hitung simpangan baku vektor<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Kode berikut menunjukkan cara menghitung simpangan baku suatu vektor di R:<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create dataset\n<\/span>data &lt;- c(1, 3, 4, 6, 11, 14, 17, 20, 22, 23)\n\n<span style=\"color: #008080;\">#find standard deviation\n<\/span>sd(data)\n\n[1] 8.279157<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Perhatikan bahwa Anda harus menggunakan <strong>na.rm = TRUE<\/strong> untuk menghitung deviasi standar jika ada nilai yang hilang dalam kumpulan data:<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create dataset with missing values\n<\/span>data &lt;- c(1, 3, 4, 6, NA, 14, NA, 20, 22, 23)\n\n<span style=\"color: #008080;\">#attempt to find standard deviation\n<\/span>sd(data)\n\n[1] NA\n\n<span style=\"color: #008080;\">#find standard deviation and specify to ignore missing values<\/span>\nsd(data, na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> )\n\n[1] 9.179753\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Contoh 2: Hitung simpangan baku kolom dalam bingkai data<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Kode berikut menunjukkan cara menghitung deviasi standar satu kolom dalam bingkai data:<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame\n<\/span>data &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (a=c(1, 3, 4, 6, 8, 9),\n                   b=c(7, 8, 8, 7, 13, 16),\n                   c=c(11, 13, 13, 18, 19, 22),\n                   d=c(12, 16, 18, 22, 29, 38))\n\n<span style=\"color: #008080;\">#find standard deviation of column a\n<\/span>sd(data$a)\n\n[1] 3.060501\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Contoh 3: Hitung simpangan baku beberapa kolom dalam bingkai data<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Kode berikut menunjukkan cara menghitung deviasi standar beberapa kolom dalam bingkai data:<\/span><\/p>\n<pre style=\"background-color: #e5e5e5; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame\n<\/span>data &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (a=c(1, 3, 4, 6, 8, 9),\n                   b=c(7, 8, 8, 7, 13, 16),\n                   c=c(11, 13, 13, 18, 19, 22),\n                   d=c(12, 16, 18, 22, 29, 38))\n\n<span style=\"color: #008080;\">#find standard deviation of specific columns in data frame\n<\/span>apply(data[, c(' <span style=\"color: #ff0000;\">a<\/span> ', ' <span style=\"color: #ff0000;\">c<\/span> ', ' <span style=\"color: #ff0000;\">d<\/span> ')], 2, sd)\n\n       acd\n3.060501 4.289522 9.544632<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Sumber daya tambahan<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/id\/pantai-di-sungai\/\" target=\"_blank\" rel=\"noopener\">Bagaimana menemukan jangkauan di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/varians-di-r\/\" target=\"_blank\" rel=\"noopener\">Cara menghitung varians sampel dan populasi di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/menghapus-outlier-r\/\" target=\"_blank\" rel=\"noopener\">Cara menghilangkan outlier di R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Anda dapat menggunakan sintaks berikut untuk menghitung deviasi standar suatu vektor di R: sd(x) Perhatikan bahwa rumus ini menghitung simpangan baku sampel menggunakan rumus berikut: \u221a \u03a3 ( xi \u2013 \u03bc) 2 \/ (n-1) Emas: \u03a3 : Simbol mewah yang berarti \u201cjumlah\u201d x i : nilai ke-i dari kumpulan data \u03bc : Nilai rata-rata kumpulan [&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>Cara 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