{"id":1966,"date":"2023-07-24T06:50:02","date_gmt":"2023-07-24T06:50:02","guid":{"rendered":"https:\/\/statorials.org\/id\/plot-regresi-polinomial-di-r\/"},"modified":"2023-07-24T06:50:02","modified_gmt":"2023-07-24T06:50:02","slug":"plot-regresi-polinomial-di-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/plot-regresi-polinomial-di-r\/","title":{"rendered":"Cara memplot kurva regresi polinomial di r"},"content":{"rendered":"

<\/p>\n

\n

Regresi polinomial<\/strong> adalah teknik regresi yang digunakan ketika hubungan antara variabel prediktor dan variabel respon<\/a> bersifat nonlinier.<\/span><\/p>\n

Tutorial ini menjelaskan cara memplot kurva regresi polinomial di R.<\/span><\/p>\n

Terkait:<\/strong> 7 Jenis Regresi Paling Umum<\/a><\/span><\/p>\n

Contoh: memplot kurva regresi polinomial di R<\/strong><\/span><\/h3>\n

Kode berikut menunjukkan cara menyesuaikan model regresi polinomial ke kumpulan data, lalu memplot kurva regresi polinomial pada data mentah dalam plot sebar:<\/span> <\/p>\n

 #define data\n<\/span>x <- runif(50, 5, 15)\ny <- 0.1*x^3 - 0.5 * x^2 - x + 5 + rnorm(length(x),0,10) \n \n#plot x vs. y\n<\/span>plot(x, y, pch= 16<\/span> , cex= 1.5<\/span> ) \n \n#fit polynomial regression model\n<\/span>fit <- lm(y ~ x + I(x^2) + I(x^3))\n \n#use model to get predicted values\n<\/span>pred <- predict(fit)\nix <- sort(x, index. return<\/span> = T<\/span> )$ix\n\n#add polynomial curve to plot\n<\/span>lines(x[ix], pred[ix], col=' red<\/span> ', lwd= 2<\/span> )\n<\/strong><\/pre>\n
\"plot<\/p>\n
 Kita juga dapat menambahkan persamaan regresi polinomial yang sesuai ke plot menggunakan fungsi text()<\/strong> :<\/span> <\/p>\n
 #define data\n<\/span>x <- runif(50, 5, 15)\ny <- 0.1*x^3 - 0.5 * x^2 - x + 5 + rnorm(length(x),0,10) \n \n#plot x vs. y\n<\/span>plot(x, y, pch=16, cex=1.5) \n \n#fit polynomial regression model\n<\/span>fit <- lm(y ~ x + I(x^2) + I(x^3))\n \n#use model to get predicted values\n<\/span>pred <- predict(fit)\nix <- sort(x, index. return<\/span> = T<\/span> )$ix\n\n#add polynomial curve to plot\n<\/span>lines(x[ix], pred[ix], col=' red<\/span> ', lwd= 2<\/span> )\n\n#get model coefficients\n<\/span>coeff <- round(fit$coefficients, 2)\n\n#add fitted model equation to plot\n<\/span>text(9, 200 , paste(\"Model: \", coeff[1], \" + \", coeff[2],\n                    \"*x\", \"+\", coeff[3], \"*x^2\", \"+\", coeff[4], \"*x^3\"), cex= 1.3<\/span> )\n<\/strong><\/pre>\n
\"\"<\/p>\n
 Perhatikan bahwa argumen cex<\/strong> mengontrol ukuran font teks. Standarnya adalah 1, jadi kami memilih untuk menggunakan nilai 1,3<\/strong> agar teks lebih mudah dibaca.<\/span><\/p>\n
 Sumber daya tambahan<\/strong><\/span><\/h3>\n
 Pengantar Regresi Polinomial<\/a>
 Cara menyesuaikan kurva polinomial di Excel<\/a>
 Cara melakukan regresi polinomial dengan Python<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Regresi polinomial adalah teknik regresi yang digunakan ketika hubungan antara variabel prediktor dan variabel respon bersifat nonlinier. Tutorial ini menjelaskan cara memplot kurva regresi polinomial di R. Terkait: 7 Jenis Regresi Paling Umum Contoh: memplot kurva regresi polinomial di R Kode berikut menunjukkan cara menyesuaikan model regresi polinomial ke kumpulan data, lalu memplot kurva regresi […]<\/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 memplot kurva regresi polinomial di R - Statorials<\/title>\n<meta name=\"description\" content=\"Tutorial ini menjelaskan cara memplot kurva regresi polinomial di R, dengan contoh lengkap.\" \/>\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\/plot-regresi-polinomial-di-r\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cara memplot kurva regresi polinomial di R - Statorials\" \/>\n<meta property=\"og:description\" content=\"Tutorial ini menjelaskan cara memplot kurva regresi polinomial di R, dengan contoh lengkap.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/id\/plot-regresi-polinomial-di-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-24T06:50:02+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/polycourbe1.png\" \/>\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=\"1 menit\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/id\/plot-regresi-polinomial-di-r\/\",\"url\":\"https:\/\/statorials.org\/id\/plot-regresi-polinomial-di-r\/\",\"name\":\"Cara memplot kurva regresi polinomial di R - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/id\/#website\"},\"datePublished\":\"2023-07-24T06:50:02+00:00\",\"dateModified\":\"2023-07-24T06:50:02+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\"},\"description\":\"Tutorial ini menjelaskan cara memplot kurva regresi polinomial di R, dengan contoh lengkap.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/id\/plot-regresi-polinomial-di-r\/#breadcrumb\"},\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/id\/plot-regresi-polinomial-di-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/id\/plot-regresi-polinomial-di-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/statorials.org\/id\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Cara memplot kurva regresi polinomial di r\"}]},{\"@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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