{"id":3135,"date":"2023-07-19T01:25:27","date_gmt":"2023-07-19T01:25:27","guid":{"rendered":"https:\/\/statorials.org\/cn\/%e7%a7%91%e6%81%a9%e6%96%af-d-%e8%87%b3-r\/"},"modified":"2023-07-19T01:25:27","modified_gmt":"2023-07-19T01:25:27","slug":"%e7%a7%91%e6%81%a9%e6%96%af-d-%e8%87%b3-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/%e7%a7%91%e6%81%a9%e6%96%af-d-%e8%87%b3-r\/","title":{"rendered":"\u5982\u4f55\u8ba1\u7b97 r \u4e2d\u7684 cohen d\uff08\u4e3e\u4f8b\uff09"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u5728\u7edf\u8ba1\u5b66\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528<a href=\"https:\/\/statorials.org\/cn\/p\u503c\u7edf\u8ba1\u663e\u7740\u6027\/\" target=\"_blank\" rel=\"noopener\">p\u503c<\/a>\u6765\u786e\u5b9a\u4e24\u7ec4\u5747\u503c\u4e4b\u95f4\u662f\u5426\u5b58\u5728\u7edf\u8ba1\u4e0a\u663e\u7740\u7684\u5dee\u5f02\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u7136\u800c\uff0c\u867d\u7136 p \u503c\u53ef\u4ee5\u544a\u8bc9\u6211\u4eec\u4e24\u7ec4\u4e4b\u95f4\u662f\u5426\u5b58\u5728\u7edf\u8ba1\u4e0a\u7684\u663e\u7740\u5dee\u5f02\uff0c<a href=\"https:\/\/statorials.org\/cn\/\u89c4\u6a21\u6548\u5e94\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u4f46\u6548\u5e94\u5927\u5c0f<\/a>\u53ef\u4ee5\u544a\u8bc9\u6211\u4eec\u8fd9\u79cd\u5dee\u5f02\u5230\u5e95\u6709\u591a\u5927\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6548\u5e94\u5927\u5c0f\u6700\u5e38\u89c1\u7684\u5ea6\u91cf\u4e4b\u4e00\u662f<strong>Cohen&#8217;s d<\/strong> \uff0c\u5176\u8ba1\u7b97\u5982\u4e0b\uff1a<\/span><\/p>\n<p><span style=\"color: #000000;\">\u79d1\u6069 D = ( <span style=\"text-decoration: overline;\">x1<\/span> \u2013 <span style=\"text-decoration: overline;\">x2<\/span> ) <sub>\/<\/sub> <sub>\u221a<\/sub> <span style=\"border-top: 1px solid black;\"><sup>(<\/sup> <sup>s12<\/sup> <sub>+<\/sub> <sub>s22<\/sub> ) \/ 2<\/span><\/span><\/p>\n<p><span style=\"color: #000000;\">\u91d1\u5b50\uff1a<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><span style=\"text-decoration: overline;\">x<\/span> <sub>1<\/sub> , <span style=\"text-decoration: overline;\">x<\/span> <sub>2<\/sub> \uff1a\u5206\u522b\u662f\u6837\u672c 1 \u548c\u6837\u672c 2 \u7684\u5e73\u5747\u503c<\/span><\/li>\n<li><span style=\"color: #000000;\">s <sub>1<\/sub> <sup>2<\/sup> , s <sub>2<\/sub> <sup>2<\/sup> : \u5206\u522b\u662f\u6837\u672c1\u548c\u6837\u672c2\u7684\u65b9\u5dee<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u4f7f\u7528\u8fd9\u4e2a\u516c\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u89e3\u91ca Cohen \u7684 d\uff1a<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><em>d<\/em>\u4e3a<strong>0.5<\/strong>\u8868\u793a\u4e24\u7ec4\u7684\u5e73\u5747\u503c\u76f8\u5dee 0.5 \u4e2a\u6807\u51c6\u5dee\u3002<\/span><\/li>\n<li> <span style=\"color: #000000;\"><em>d<\/em>\u4e3a<strong>1<\/strong>\u8868\u793a\u7ec4\u5e73\u5747\u503c\u76f8\u5dee 1 \u4e2a\u6807\u51c6\u5dee\u3002<\/span><\/li>\n<li> <span style=\"color: #000000;\"><em>d<\/em>\u4e3a<strong>2<\/strong>\u8868\u793a\u7ec4\u5e73\u5747\u503c\u76f8\u5dee 2 \u4e2a\u6807\u51c6\u5dee\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u7b49\u7b49\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u8fd9\u662f\u89e3\u91ca Cohen d \u7684\u53e6\u4e00\u79cd\u65b9\u6cd5\uff1a\u6548\u5e94\u5927\u5c0f 0.5 \u610f\u5473\u7740\u7b2c 1 \u7ec4\u4e2d\u7684\u5e73\u5747\u4eba\u7684\u503c\u6bd4\u7b2c 2 \u7ec4\u4e2d\u7684\u5e73\u5747\u4eba\u7684\u503c\u9ad8 0.5 \u4e2a\u6807\u51c6\u5dee\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528\u4ee5\u4e0b\u7ecf\u9a8c\u6cd5\u5219\u6765\u89e3\u91ca Cohen \u7684 d\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">\u503c<strong>0.2<\/strong>\u8868\u793a\u6548\u5e94\u91cf\u8f83\u5c0f\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u503c<strong>0.5<\/strong>\u8868\u793a\u4e2d\u7b49\u6548\u5e94\u5927\u5c0f\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u503c\u4e3a<strong>0.8<\/strong>\u8868\u793a\u6548\u5e94\u91cf\u8f83\u5927\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u793a\u4f8b\u663e\u793a\u5982\u4f55\u5728 R \u4e2d\u8ba1\u7b97 Cohen d\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b\uff1a\u5982\u4f55\u5728 R \u4e2d\u8ba1\u7b97 Cohen d<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u5047\u8bbe\u690d\u7269\u5b66\u5bb6\u5411\u690d\u7269\u65bd\u7528\u4e24\u79cd\u4e0d\u540c\u7684\u80a5\u6599\uff0c\u4ee5\u786e\u5b9a\u4e00\u4e2a\u6708\u540e\u690d\u7269\u7684\u5e73\u5747\u751f\u957f\uff08\u4ee5\u82f1\u5bf8\u4e3a\u5355\u4f4d\uff09\u662f\u5426\u5b58\u5728\u663e\u7740\u5dee\u5f02\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4e24\u79cd\u65b9\u6cd5\u6765\u5feb\u901f\u8ba1\u7b97 R \u4e2d\u7684 Cohen&#8217;s d\uff1a<\/span><\/p>\n<p><span style=\"color: #000000;\"><strong>\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528lsr\u5305<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #107d3f;\">library<\/span> (lsr)\n\n<span style=\"color: #008080;\">#define plant growth values for each group\n<span style=\"color: #000000;\">group1 &lt;- c(8, 9, 11, 11, 12, 14, 15, 16, 16, 18, 20, 21)\ngroup2 &lt;- c(7, 9, 10, 10, 11, 11, 12, 14, 14, 16, 20, 23)<\/span>\n\n#calculate Cohen's d\n<span style=\"color: #000000;\">cohensD(group1, group2)\n\n[1] 0.2635333\n<\/span><\/span><\/strong><\/pre>\n<p><span style=\"color: #000000;\"><strong>\u65b9\u6cd52\uff1a\u4f7f\u7528effsize\u5305<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #107d3f;\">library<\/span> (effsize)\n\n<span style=\"color: #008080;\">#define plant growth values for each group\n<span style=\"color: #000000;\">group1 &lt;- c(8, 9, 11, 11, 12, 14, 15, 16, 16, 18, 20, 21)\ngroup2 &lt;- c(7, 9, 10, 10, 11, 11, 12, 14, 14, 16, 20, 23)<\/span>\n\n#calculate Cohen's d\n<span style=\"color: #000000;\">cohen.d(group1, group2)\n\nCohen's d\n\nd estimate: 0.2635333 (small)\n95 percent confidence interval:\n     lower upper \n-0.5867889 1.1138555<\/span><\/span><\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u8bf7\u6ce8\u610f\uff0c\u8fd9\u4e24\u79cd\u65b9\u6cd5\u4ea7\u751f\u76f8\u540c\u7684\u7ed3\u679c\uff1aCohen \u7684 d \u4e3a<strong>0.2635<\/strong> \u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u5c06\u6b64\u89e3\u91ca\u4e3a\u63a5\u53d7 1 \u53f7\u80a5\u6599\u7684\u690d\u7269\u7684\u5e73\u5747\u9ad8\u5ea6\u6bd4\u63a5\u53d7 2 \u53f7\u80a5\u6599\u7684\u690d\u7269\u7684\u5e73\u5747\u9ad8\u5ea6\u5927<strong>0.2635 \u4e2a<\/strong>\u6807\u51c6\u5dee\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u4f7f\u7528\u524d\u9762\u63d0\u5230\u7684\u7ecf\u9a8c\u6cd5\u5219\uff0c\u6211\u4eec\u4f1a\u5c06\u5176\u89e3\u91ca\u4e3a\u8f83\u5c0f\u7684\u6548\u5e94\u91cf\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6362\u53e5\u8bdd\u8bf4\uff0c\u65e0\u8bba\u4e24\u79cd\u80a5\u6599\u4e4b\u95f4\u7684\u5e73\u5747\u690d\u7269\u751f\u957f\u662f\u5426\u5b58\u5728\u7edf\u8ba1\u5b66\u4e0a\u7684\u663e\u7740\u5dee\u5f02\uff0c\u7ec4\u5747\u503c\u4e4b\u95f4\u7684\u5b9e\u9645\u5dee\u5f02\u90fd\u662f\u5fae\u4e0d\u8db3\u9053\u7684\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u5176\u4ed6\u8d44\u6e90<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u6559\u7a0b\u63d0\u4f9b\u4e86\u6709\u5173\u6548\u5e94\u5927\u5c0f\u548c Cohen&#8217;s d \u7684\u66f4\u591a\u4fe1\u606f\uff1a<\/span><\/p>\n<p><a href=\"https:\/\/statorials.org\/cn\/\u89c4\u6a21\u6548\u5e94\/\" target=\"_blank\" rel=\"noopener\">\u6548\u5e94\u5927\u5c0f\uff1a\u5b83\u662f\u4ec0\u4e48\u4ee5\u53ca\u4e3a\u4ec0\u4e48\u91cd\u8981<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/\u79d1\u6069\u65af\u00b7\u57c3\u514b\u65af\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5728 Excel \u4e2d\u8ba1\u7b97 Cohen d<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u7edf\u8ba1\u5b66\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528p\u503c\u6765\u786e\u5b9a\u4e24\u7ec4\u5747\u503c\u4e4b\u95f4\u662f\u5426\u5b58\u5728\u7edf\u8ba1\u4e0a\u663e\u7740\u7684\u5dee\u5f02\u3002 \u7136\u800c\uff0c\u867d\u7136 p \u503c\u53ef\u4ee5\u544a\u8bc9\u6211\u4eec\u4e24\u7ec4\u4e4b [&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-3135","post","type-post","status-publish","format-standard","hentry","category-11"],"yoast_head":"<!-- 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