{"id":1374,"date":"2023-07-26T15:59:42","date_gmt":"2023-07-26T15:59:42","guid":{"rendered":"https:\/\/statorials.org\/cn\/r-%e4%b8%ad%e7%9a%84-chow-%e6%b5%8b%e8%af%95\/"},"modified":"2023-07-26T15:59:42","modified_gmt":"2023-07-26T15:59:42","slug":"r-%e4%b8%ad%e7%9a%84-chow-%e6%b5%8b%e8%af%95","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/r-%e4%b8%ad%e7%9a%84-chow-%e6%b5%8b%e8%af%95\/","title":{"rendered":"\u5982\u4f55\u5728 r \u4e2d\u6267\u884c chow \u6d4b\u8bd5"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/cn\/\u98df\u54c1\u6d4b\u8bd5\/\" target=\"_blank\" rel=\"noopener\">Chow\u68c0\u9a8c<\/a>\u7528\u4e8e\u68c0\u9a8c\u4e24\u4e2a\u4e0d\u540c\u56de\u5f52\u6a21\u578b\u5728\u4e0d\u540c\u6570\u636e\u96c6\u4e0a\u7684\u7cfb\u6570\u662f\u5426\u76f8\u7b49\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u8be5\u68c0\u9a8c\u901a\u5e38\u7528\u4e8e\u8ba1\u91cf\u7ecf\u6d4e\u5b66\u9886\u57df\u7684\u65f6\u95f4\u5e8f\u5217\u6570\u636e\uff0c\u4ee5\u786e\u5b9a\u7ed9\u5b9a\u65f6\u95f4\u70b9\u7684\u6570\u636e\u662f\u5426\u5b58\u5728\u7ed3\u6784\u6027\u4e2d\u65ad\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u672c\u6559\u7a0b\u63d0\u4f9b\u4e86\u5982\u4f55\u5728 R \u4e2d\u6267\u884c Chow \u6d4b\u8bd5\u7684\u5206\u6b65\u793a\u4f8b\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u7b2c 1 \u6b65\uff1a\u521b\u5efa\u6570\u636e<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u9996\u5148\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u5047\u6570\u636e\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data<\/span>\ndata &lt;- data.frame(x = c(1, 1, 2, 3, 4, 4, 5, 5, 6, 7, 7, 8, 8, 9, 10, 10,\n                         11, 12, 12, 13, 14, 15, 15, 16, 17, 18, 18, 19, 20, 20),\n                   y = c(3, 5, 6, 10, 13, 15, 17, 14, 20, 23, 25, 27, 30, 30, 31,\n                         33, 32, 32, 30, 32, 34, 34, 37, 35, 34, 36, 34, 37, 38, 36))\n\n<span style=\"color: #008080;\">#view first six rows of data<\/span>\nhead(data)\n\n  xy\n1 1 3\n2 1 5\n3 2 6\n4 3 10\n5 4 13\n6 4 15\n<\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u7b2c 2 \u6b65\uff1a\u53ef\u89c6\u5316\u6570\u636e<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u6563\u70b9\u56fe\u6765\u53ef\u89c6\u5316\u6570\u636e\uff1a<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#load ggplot2 visualization package\n<\/span><span style=\"color: #993300;\">library<\/span> (ggplot2)\n\n<span style=\"color: #008080;\">#create scatterplot\n<\/span>ggplot(data, <span style=\"color: #3366ff;\">aes<\/span> (x = x, y = y)) +\n    geom_point(col=' <span style=\"color: #008000;\">steelblue<\/span> ', size= <span style=\"color: #008000;\">3<\/span> )\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13615 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/bouffer1.png\" alt=\"R \u4e2d\u7684\u98df\u54c1\u6d4b\u8bd5\" width=\"419\" height=\"418\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p><span style=\"color: #000000;\">\u4ece\u6563\u70b9\u56fe\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u6570\u636e\u4e2d\u7684\u6a21\u5f0f\u5728 x = 10 \u5904\u51fa\u73b0\u53d8\u5316\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u6267\u884c Chow \u68c0\u9a8c\u6765\u786e\u5b9a\u6570\u636e\u4e2d\u5728 x = 10 \u5904\u662f\u5426\u5b58\u5728\u7ed3\u6784\u65ad\u70b9\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u7b2c 3 \u6b65\uff1a\u6267\u884c Chow \u6d4b\u8bd5<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<\/span>strucchange \u5305\u4e2d\u7684<a href=\"https:\/\/www.rdocumentation.org\/packages\/strucchange\/versions\/1.5-2\/topics\/sctest\" target=\"_blank\" rel=\"noopener\">sctest<\/a>\u51fd\u6570<span style=\"color: #000000;\"><strong>\u6765<\/strong>\u6267\u884c Chow \u6d4b\u8bd5\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#load strucchange package\n<\/span><span style=\"color: #993300;\">library<\/span> (strucchange)\n\n<span style=\"color: #008080;\">#perform Chow test<\/span>\nsctest(data$y ~ data$x, type = \" <span style=\"color: #008000;\">Chow<\/span> \", point = <span style=\"color: #008000;\">10<\/span> )\n\n\tChow test\n\ndata: data$y ~ data$x\nF = 110.14, p-value = 2.023e-13\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u4ece\u6d4b\u8bd5\u7ed3\u679c\u6211\u4eec\u53ef\u4ee5\u770b\u51fa\uff1a<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>F \u68c0\u9a8c<\/strong><strong>\u7edf\u8ba1\u91cf<\/strong>\uff1a110.14<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>p \u503c\uff1a<\/strong> &lt;.0000<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u7531\u4e8e p \u503c\u5c0f\u4e8e 0.05\uff0c\u6211\u4eec\u53ef\u4ee5\u62d2\u7edd\u68c0\u9a8c\u7684\u539f\u5047\u8bbe\u3002\u8fd9\u610f\u5473\u7740\u6211\u4eec\u6709\u8db3\u591f\u7684\u8bc1\u636e\u8868\u660e\u6570\u636e\u4e2d\u5b58\u5728\u7ed3\u6784\u65ad\u70b9\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6362\u53e5\u8bdd\u8bf4\uff0c\u4e24\u6761\u56de\u5f52\u7ebf\u6bd4\u4e00\u6761\u56de\u5f52\u7ebf\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u62df\u5408\u6570\u636e\u4e2d\u7684\u6a21\u578b\u3002<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chow\u68c0\u9a8c\u7528\u4e8e\u68c0\u9a8c\u4e24\u4e2a\u4e0d\u540c\u56de\u5f52\u6a21\u578b\u5728\u4e0d\u540c\u6570\u636e\u96c6\u4e0a\u7684\u7cfb\u6570\u662f\u5426\u76f8\u7b49\u3002 \u8be5\u68c0\u9a8c\u901a\u5e38\u7528\u4e8e\u8ba1\u91cf\u7ecf\u6d4e\u5b66\u9886\u57df\u7684\u65f6\u95f4\u5e8f\u5217\u6570\u636e [&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":[],"class_list":["post-1374","post","type-post","status-publish","format-standard","hentry","category-11"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5982\u4f55\u5728 R \u4e2d\u6267\u884c Chow \u6d4b\u8bd5 - Statorials<\/title>\n<meta name=\"description\" content=\"\u672c\u6559\u7a0b\u4ecb\u7ecd\u5982\u4f55\u5728 R \u4e2d\u6267\u884c Chow \u6d4b\u8bd5\uff0c\u5305\u62ec\u5206\u6b65\u793a\u4f8b\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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