{"id":3786,"date":"2023-07-15T13:40:55","date_gmt":"2023-07-15T13:40:55","guid":{"rendered":"https:\/\/statorials.org\/id\/simpangan-baku-menurut-kelompok-di-r\/"},"modified":"2023-07-15T13:40:55","modified_gmt":"2023-07-15T13:40:55","slug":"simpangan-baku-menurut-kelompok-di-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/simpangan-baku-menurut-kelompok-di-r\/","title":{"rendered":"Cara menghitung deviasi standar berdasarkan grup di r (dengan contoh)"},"content":{"rendered":"

<\/p>\n

\n

Anda dapat menggunakan salah satu metode berikut untuk menghitung deviasi standar berdasarkan kelompok di R:<\/span><\/p>\n

Metode 1: gunakan basis R<\/strong><\/span><\/p>\n

 aggregate(df$col_to_aggregate, list(df$col_to_group_by), FUN=sd)<\/strong><\/span><\/pre>\n
 Metode 2: gunakan dplyr<\/strong><\/span><\/p>\n
 library<\/span> (dplyr)\n\ndf %>%\n  group_by(col_to_group_by) %>%\n  summarise_at(vars(col_to_aggregate), list(name=sd))\n<\/span><\/b><\/span><\/pre>\n
 Metode 3: Gunakan data.tabel<\/strong><\/span><\/p>\n
 library<\/span> (data.table)\n\nsetDT(df)\n\ndt[ ,list(sd=sd(col_to_aggregate)), by=col_to_group_by]\n<\/span><\/b><\/span><\/pre>\n
 Contoh berikut menunjukkan cara menggunakan masing-masing metode ini dalam praktik dengan kerangka data berikut di R:<\/span><\/p>\n
 #create data frame\n<\/span>df <- data. frame<\/span> (team=rep(c(' A<\/span> ', ' B<\/span> ', ' C<\/span> '), each= 6<\/span> ),\n                 points=c(8, 10, 12, 12, 14, 15, 10, 11, 12,\n                          18, 22, 24, 3, 5, 5, 6, 7, 9))\n\n#view data frame\n<\/span>df\n\n   team points\n1 to 8\n2 to 10\n3 to 12\n4 to 12\n5 to 14\n6 to 15\n7 B 10\n8 B 11\n9 B 12\n10 B 18\n11 B 22\n12 B 24\n13 C 3\n14 C 5\n15 C 5\n16 C 6\n17 C 7\n18 C 9<\/b><\/span><\/pre>\n
 Metode 1: Hitung simpangan baku berdasarkan kelompok menggunakan basis R<\/strong><\/span><\/h2>\n
 Kode berikut menunjukkan cara menggunakan fungsi Aggregate()<\/strong> dari database R untuk menghitung deviasi standar poin yang dicetak oleh tim:<\/span><\/p>\n
 #calculate standard deviation of points by team\n<\/span>aggregate(df$points, list(df$team), FUN=sd)\n\n  Group.1 x\n1 A 2.562551\n2 B 6.013873\n3 C 2.041241<\/span><\/strong><\/pre>\n
 Metode 2: Hitung<\/strong><\/span> simpangan baku<\/strong><\/span> berdasarkan kelompok menggunakan dplyr<\/strong><\/span><\/h2>\n
 Kode berikut menunjukkan cara menggunakan fungsi group_by<\/strong> ()<\/strong> dan summarise_at()<\/strong> dari paket dplyr<\/strong> untuk menghitung deviasi standar poin yang dicetak oleh tim:<\/span><\/p>\n
 library<\/span> (dplyr)<\/b><\/span><\/span>\n\n#calculate standard deviation of points scored by team<\/span>\ndf %>%\n  group_by(team) %>%\n  summarise_at(vars(points), list(name=sd))\n\n<\/b># A tibble: 3 x 2\n  team name\n   \n1 to 2.56\n2 B 6.01\n3C 2.04\n<\/span><\/strong><\/pre>\n
 Metode 3: Hitung simpangan baku per kelompok menggunakan data.tabel<\/strong><\/span><\/h2>\n
 Kode berikut menunjukkan cara menghitung deviasi standar poin yang dicetak oleh tim menggunakan fungsi dalam paket data.table<\/strong> :<\/span><\/p>\n
 library<\/span> (data.table)<\/b>\n<\/span><\/span>\n#convert data frame to data table<\/span> \nsetDT(df)\n\n#calculate standard deviation of points scored by team<\/span>\ndf[,list(sd=sd(points)), by=team]\n<\/span>\n   team sd\n1: A 2.562551\n2: B 6.013873\n3:C2.041241<\/b><\/span><\/strong><\/pre>\n
 Perhatikan bahwa ketiga metode memberikan hasil yang sama.<\/span><\/p>\n
 Catatan<\/strong> : Jika Anda bekerja dengan kerangka data yang sangat besar, disarankan untuk menggunakan pendekatan dplyr<\/strong> atau data.table<\/strong> karena paket-paket ini bekerja jauh lebih cepat daripada basis R.<\/span><\/p>\n
 Sumber daya tambahan<\/strong><\/span><\/h2>\n
 Tutorial berikut menjelaskan cara melakukan tugas umum lainnya di R:<\/span><\/p>\n
 Cara menghitung mean per grup di R<\/a>
 Cara menghitung jumlah berdasarkan kelompok di R<\/a>
 Cara menghitung kuantil berdasarkan kelompok di R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Anda dapat menggunakan salah satu metode berikut untuk menghitung deviasi standar berdasarkan kelompok di R: Metode 1: gunakan basis R aggregate(df$col_to_aggregate, list(df$col_to_group_by), FUN=sd) Metode 2: gunakan dplyr library (dplyr) df %>% group_by(col_to_group_by) %>% summarise_at(vars(col_to_aggregate), list(name=sd)) Metode 3: Gunakan data.tabel library (data.table) setDT(df) dt[ ,list(sd=sd(col_to_aggregate)), by=col_to_group_by] Contoh berikut menunjukkan cara menggunakan masing-masing metode ini dalam praktik […]<\/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":"\nCara menghitung simpangan baku berdasarkan kelompok di R (dengan contoh) - Statorial<\/title>\n<meta name=\"description\" content=\"Tutorial ini menjelaskan cara menghitung simpangan baku grup di R, dengan beberapa contoh.\" \/>\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\/id\/simpangan-baku-menurut-kelompok-di-r\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cara menghitung simpangan baku berdasarkan kelompok di R (dengan contoh) - Statorial\" \/>\n<meta property=\"og:description\" content=\"Tutorial ini menjelaskan cara menghitung simpangan baku grup di R, dengan beberapa contoh.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/id\/simpangan-baku-menurut-kelompok-di-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-15T13:40:55+00:00\" \/>\n<meta name=\"author\" content=\"Benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Ditulis oleh\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimasi waktu membaca\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 menit\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/id\/simpangan-baku-menurut-kelompok-di-r\/\",\"url\":\"https:\/\/statorials.org\/id\/simpangan-baku-menurut-kelompok-di-r\/\",\"name\":\"Cara menghitung simpangan baku berdasarkan kelompok di R (dengan contoh) - Statorial\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/id\/#website\"},\"datePublished\":\"2023-07-15T13:40:55+00:00\",\"dateModified\":\"2023-07-15T13:40:55+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\"},\"description\":\"Tutorial ini menjelaskan cara menghitung simpangan baku grup di R, dengan beberapa contoh.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/id\/simpangan-baku-menurut-kelompok-di-r\/#breadcrumb\"},\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/id\/simpangan-baku-menurut-kelompok-di-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/id\/simpangan-baku-menurut-kelompok-di-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/statorials.org\/id\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Cara menghitung deviasi standar berdasarkan grup di r (dengan contoh)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/id\/#website\",\"url\":\"https:\/\/statorials.org\/id\/\",\"name\":\"Statorials\",\"description\":\"Panduan anda untuk kompetensi statistik!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/id\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"id\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\",\"name\":\"Benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"id\",\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/image\/\",\"url\":\"http:\/\/statorials.org\/id\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"http:\/\/statorials.org\/id\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin anderson\"},\"description\":\"Halo, saya Benjamin, pensiunan profesor statistika yang menjadi guru Statorial yang berdedikasi. 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