{"id":850,"date":"2023-07-28T13:30:45","date_gmt":"2023-07-28T13:30:45","guid":{"rendered":"https:\/\/statorials.org\/cn\/%e6%9b%bc%c2%b7%e6%83%a0%e7%89%b9%e5%b0%bc-u-%e6%b5%8b%e8%af%95-python\/"},"modified":"2023-07-28T13:30:45","modified_gmt":"2023-07-28T13:30:45","slug":"%e6%9b%bc%c2%b7%e6%83%a0%e7%89%b9%e5%b0%bc-u-%e6%b5%8b%e8%af%95-python","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/%e6%9b%bc%c2%b7%e6%83%a0%e7%89%b9%e5%b0%bc-u-%e6%b5%8b%e8%af%95-python\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 python \u6267\u884c mann-whitney u \u68c0\u9a8c"},"content":{"rendered":"<p><\/p>\n<hr>\n<p>\u5f53\u6837\u672c\u5206\u5e03\u4e0d\u5448\u6b63\u6001\u5206\u5e03\u4e14\u6837\u672c\u91cf\u8f83\u5c0f (n &lt; 30) \u65f6\uff0c <span style=\"color: #000000;\">Mann<\/span> <a href=\"https:\/\/statorials.org\/cn\/\u66fc\u60e0\u7279\u5c3cu\u6d4b\u8bd5\/\" target=\"_blank\" rel=\"noopener\"><strong>-Whitney U \u68c0\u9a8c<\/strong><\/a><span style=\"color: #000000;\">\u7528\u4e8e\u6bd4\u8f83\u4e24\u4e2a\u6837\u672c\u4e4b\u95f4\u7684\u5dee\u5f02\u3002<\/span><\/p>\n<p>\u5b83\u88ab\u8ba4\u4e3a<a href=\"https:\/\/statorials.org\/cn\/\u4e24\u4e2a\u6837\u672c-t-\u6d4b\u8bd5-python\/\" target=\"_blank\" rel=\"noopener\"><strong>\u662f\u53cc\u6837\u672c t \u68c0\u9a8c<\/strong><\/a><span style=\"color: #000000;\">\u7684\u975e\u53c2\u6570\u7b49\u6548\u9879<\/span><span style=\"color: #000000;\">\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u672c\u6559\u7a0b\u4ecb\u7ecd\u5982\u4f55\u5728 Python \u4e2d\u6267\u884c Mann-Whitney U \u6d4b\u8bd5\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b\uff1aPython \u4e2d\u7684 Mann-Whitney U \u6d4b\u8bd5<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u7814\u7a76\u4eba\u5458\u60f3\u77e5\u9053\u71c3\u6cb9\u5904\u7406\u662f\u5426\u4f1a\u5bfc\u81f4\u6c7d\u8f66\u5e73\u5747\u82f1\u91cc\/\u52a0\u4ed1\u7684\u53d8\u5316\u3002\u4e3a\u4e86\u6d4b\u8bd5\u8fd9\u4e00\u70b9\uff0c\u4ed6\u4eec\u6d4b\u91cf\u4e86 12 \u8f86\u7ecf\u8fc7\u71c3\u6cb9\u5904\u7406\u7684\u6c7d\u8f66\u548c 12 \u8f86\u672a\u7ecf\u71c3\u6cb9\u5904\u7406\u7684\u6c7d\u8f66\u7684\u6bcf\u52a0\u4ed1\u82f1\u91cc\u6570\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u7531\u4e8e\u6837\u672c\u91cf\u5f88\u5c0f\uff0c\u5e76\u4e14\u7814\u7a76\u4eba\u5458\u6000\u7591\u6837\u672c\u5206\u5e03\u4e0d\u662f\u6b63\u6001\u5206\u5e03\uff0c\u56e0\u6b64\u4ed6\u4eec\u51b3\u5b9a\u8fdb\u884c Mann-Whitney U \u68c0\u9a8c\uff0c\u4ee5\u786e\u5b9a\u4e24\u7ec4\u4e4b\u95f4\u7684 mpg \u662f\u5426\u5b58\u5728\u7edf\u8ba1\u4e0a\u7684\u663e\u7740\u5dee\u5f02\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u5b8c\u6210\u4ee5\u4e0b\u6b65\u9aa4\u4ee5\u5728 Python \u4e2d\u6267\u884c Mann-Whitney U \u6d4b\u8bd5\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\"><strong>\u7b2c 1 \u6b65\uff1a\u521b\u5efa\u6570\u636e\u3002<\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\">\u9996\u5148\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u4e24\u4e2a\u8868\u6765\u4fdd\u5b58\u6bcf\u4e2a\u6c7d\u8f66\u7ec4\u7684 mpg \u503c\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>group1 = [20, 23, 21, 25, 18, 17, 18, 24, 20, 24, 23, 19]<\/strong>\n<strong>group2 = [24, 25, 21, 22, 23, 18, 17, 28, 24, 27, 21, 23]<\/strong><\/pre>\n<p><span style=\"color: #000000;\"><strong>\u6b65\u9aa4 2\uff1a\u6267\u884c Mann-Whitney U \u68c0\u9a8c\u3002<\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\">\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u4f7f\u7528 scipy.stats \u5e93\u4e2d\u7684<a href=\"https:\/\/docs.scipy.org\/doc\/scipy\/reference\/generated\/scipy.stats.mannwhitneyu.html\" target=\"_blank\" rel=\"noopener\">mannwhitneyu() \u51fd\u6570<\/a>\u6765\u6267\u884c Mann-Whitney U \u6d4b\u8bd5\uff0c\u8be5\u6d4b\u8bd5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>mannwhitneyu(x, y, use_\u8fde\u7eed\u6027=\u771f, \u66ff\u4ee3=\u65e0)<\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\">\u91d1\u5b50\uff1a<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>x\uff1a<\/strong>\u7b2c 1 \u7ec4\u7684\u6837\u672c\u89c2\u5bdf\u8868<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>y\uff1a<\/strong>\u7b2c 2 \u7ec4\u7684\u6837\u672c\u89c2\u6d4b\u503c\u8868<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>use_\u8fde\u7eed\u6027\uff1a<\/strong>\u662f\u5426\u5fc5\u987b\u8003\u8651\u8fde\u7eed\u6027\u6821\u6b63\uff081\/2\uff09\u3002\u9ed8\u8ba4\u503c\u4e3a True\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>\u66ff\u4ee3\uff1a<\/strong>\u5b9a\u4e49\u66ff\u4ee3\u5047\u8bbe\u3002\u9ed8\u8ba4\u503c\u4e3a\u201c\u65e0\u201d\uff0c\u5b83\u8ba1\u7b97\u7684 p \u503c\u662f\u201c\u53cc\u5c3e\u201dp \u503c\u7684\u4e00\u534a\u3002\u5176\u4ed6\u9009\u9879\u5305\u62ec\u201c\u53cc\u9762\u201d\u3001\u201c\u66f4\u5c11\u201d\u548c\u201c\u52a0\u201d\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u662f\u5728\u6211\u4eec\u7684\u5177\u4f53\u793a\u4f8b\u4e2d\u5982\u4f55\u4f7f\u7528\u6b64\u51fd\u6570\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #107d3f;\">import<\/span> scipy.stats <span style=\"color: #107d3f;\">as<\/span> stats\n\n<span style=\"color: #008080;\">#perform the Mann-Whitney U test<\/span>\nstats. <span style=\"color: #3366ff;\">mannwhitneyu<\/span> (group1, group2, alternative=' <span style=\"color: #ff0000;\">two-sided<\/span> ')\n\n(statistic=50.0, pvalue=0.2114)\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u68c0\u9a8c\u7edf\u8ba1\u91cf\u4e3a<strong>50.0<\/strong> \uff0c\u76f8\u5e94\u7684\u53cc\u5c3e p \u503c\u4e3a<strong>0.2114<\/strong> \u3002<\/span><\/p>\n<p><span style=\"color: #000000;\"><strong>\u7b2c 3 \u6b65\uff1a\u89e3\u91ca\u7ed3\u679c\u3002<\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\">\u5728\u6b64\u793a\u4f8b\u4e2d\uff0cMann-Whitney U \u68c0\u9a8c\u4f7f\u7528\u4ee5\u4e0b\u539f\u5047\u8bbe\u548c\u5907\u62e9\u5047\u8bbe\uff1a<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>H <sub>0<\/sub> :<\/strong>\u4e24\u7ec4\u95f4 MPG \u76f8\u7b49<\/span><\/p>\n<p><span style=\"color: #000000;\"><strong>H <sub>A<\/sub> :<\/strong>\u4e24\u7ec4\u4e4b\u95f4\u7684 MPG<em>\u4e0d<\/em>\u76f8\u7b49<\/span><\/p>\n<p><span style=\"color: #000000;\">\u7531\u4e8e p \u503c ( <strong>0.2114<\/strong> ) \u4e0d\u5c0f\u4e8e 0.05\uff0c\u56e0\u6b64\u6211\u4eec\u65e0\u6cd5\u62d2\u7edd\u539f\u5047\u8bbe\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u8fd9\u610f\u5473\u7740\u6211\u4eec\u6ca1\u6709\u8db3\u591f\u7684\u8bc1\u636e\u8868\u660e\u4e24\u7ec4\u4e4b\u95f4\u7684\u771f\u5b9e\u5e73\u5747\u82f1\u91cc\u6570\u4e0d\u540c\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\u89e3\u91ca\u4e86\u5982\u4f55\u5728\u4e0d\u540c\u7684\u7edf\u8ba1\u8f6f\u4ef6\u4e2d\u6267\u884c Mann-Whitney U \u68c0\u9a8c\uff1a<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/cn\/\u5982\u4f55\u5728-excel-\u4e2d\u6267\u884c\u66fc\u60e0\u7279\u5c3c-u-\u68c0\u9a8c\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5728 Excel \u4e2d\u6267\u884c\u66fc-\u60e0\u7279\u5c3c U \u68c0\u9a8c<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/\u66fc\u00b7\u60e0\u7279\u5c3c-u-\u6d4b\u8bd5-r\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5728 R \u4e2d\u6267\u884c Mann-Whitney U \u68c0\u9a8c<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/\u66fc\u00b7\u60e0\u7279\u5c3c-u-\u68c0\u9a8c-spss\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5728 SPSS \u4e2d\u6267\u884c Mann-Whitney U \u68c0\u9a8c<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u6837\u672c\u5206\u5e03\u4e0d\u5448\u6b63\u6001\u5206\u5e03\u4e14\u6837\u672c\u91cf\u8f83\u5c0f (n &lt; 30) \u65f6\uff0c Mann -Whitney U \u68c0\u9a8c\u7528\u4e8e\u6bd4\u8f83 [&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-850","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\/ 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