{"id":1016,"date":"2023-07-27T23:50:18","date_gmt":"2023-07-27T23:50:18","guid":{"rendered":"https:\/\/statorials.org\/cn\/phi%e7%b3%bb%e6%95%b0\/"},"modified":"2023-07-27T23:50:18","modified_gmt":"2023-07-27T23:50:18","slug":"phi%e7%b3%bb%e6%95%b0","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/phi%e7%b3%bb%e6%95%b0\/","title":{"rendered":"Phi \u7cfb\u6570\uff1a\u5b9a\u4e49\u548c\u793a\u4f8b"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><strong>Phi \u7cfb\u6570<\/strong>\uff08\u6709\u65f6\u79f0\u4e3a<em>\u5747\u65b9\u5217\u8054\u7cfb\u6570<\/em>\uff09\u662f\u4e24\u4e2a\u4e8c\u5143\u53d8\u91cf\u4e4b\u95f4\u5173\u8054\u6027\u7684\u5ea6\u91cf\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u5bf9\u4e8e\u7ed9\u5b9a\u4e24\u4e2a\u968f\u673a\u53d8\u91cf<em>x<\/em>\u548c<em>y<\/em>\u7684 2\u00d72 \u8868\uff1a<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-10491 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/phicoef1.png\" alt=\"\" width=\"160\" height=\"155\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Phi\u7cfb\u6570\u53ef\u4ee5\u8ba1\u7b97\u5982\u4e0b\uff1a<\/span><\/p>\n<p> <strong><span style=\"color: #000000;\">\u03a6 = (AD-BC) \/ \u221a <span style=\"text-decoration: overline;\">(A+B)(C+D)(A+C)(B+D)<\/span><\/span><\/strong><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b\uff1aPhi \u7cfb\u6570\u7684\u8ba1\u7b97<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u5047\u8bbe\u6211\u4eec\u60f3\u77e5\u9053\u6027\u522b\u662f\u5426\u4e0e\u5bf9\u653f\u515a\u7684\u504f\u597d\u76f8\u5173\u3002\u6211\u4eec\u5bf9 25 \u540d\u9009\u6c11\u8fdb\u884c\u4e86\u7b80\u5355\u7684\u968f\u673a\u62bd\u6837\uff0c\u5e76\u8be2\u95ee\u4ed6\u4eec\u7684\u653f\u515a\u504f\u597d\u3002\u4e0b\u8868\u5217\u51fa\u4e86\u8c03\u67e5\u7ed3\u679c\uff1a<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-10492 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/phicoef2.png\" alt=\"Phi\u7cfb\u6570\u8ba1\u7b97\u793a\u4f8b\" width=\"175\" height=\"178\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u53ef\u4ee5\u8ba1\u7b97\u4e24\u4e2a\u53d8\u91cf\u4e4b\u95f4\u7684 Phi \u7cfb\u6570\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u03a6 = (4*4-9*8) \/ \u221a <span style=\"text-decoration: overline;\">(4+9)(8+4)(4+8)(9+4)<\/span> = (16-72) \/ \u221a <span style=\"text-decoration: overline;\">24336<\/span> = <strong>-0.3589<\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\"><em><strong>\u6ce8\u610f\uff1a<\/strong>\u6211\u4eec\u4e5f\u53ef\u4ee5\u4f7f\u7528 Phi \u7cfb\u6570\u8ba1\u7b97\u5668\u6765\u8ba1\u7b97\u3002<\/em><\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u5982\u4f55\u89e3\u91ca Phi \u7cfb\u6570<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4e0e Pearson \u76f8\u5173\u7cfb\u6570\u7c7b\u4f3c\uff0cPhi \u7cfb\u6570\u53d6 -1 \u5230 1 \u4e4b\u95f4\u7684\u503c\uff0c\u5176\u4e2d\uff1a<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>-1<\/strong>\u8868\u793a\u4e24\u4e2a\u53d8\u91cf\u4e4b\u95f4\u5b8c\u5168\u8d1f\u76f8\u5173\u3002<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>0<\/strong>\u8868\u793a\u4e24\u4e2a\u53d8\u91cf\u4e4b\u95f4\u6ca1\u6709\u5173\u8054\u3002<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>1<\/strong>\u8868\u660e\u4e24\u4e2a\u53d8\u91cf\u4e4b\u95f4\u5b58\u5728\u5b8c\u5168\u6b63\u76f8\u5173\u5173\u7cfb\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u4e00\u822c\u6765\u8bf4\uff0cPhi \u7cfb\u6570\u79bb\u96f6\u8d8a\u8fdc\uff0c\u4e24\u4e2a\u53d8\u91cf\u4e4b\u95f4\u7684\u5173\u7cfb\u8d8a\u5f3a\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6362\u53e5\u8bdd\u8bf4\uff0cPhi \u7cfb\u6570\u79bb\u96f6\u8d8a\u8fdc\uff0c\u4e24\u4e2a\u53d8\u91cf\u4e4b\u95f4\u5b58\u5728\u67d0\u79cd\u7cfb\u7edf\u6a21\u5f0f\u7684\u8bc1\u636e\u5c31\u8d8a\u591a\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u5176\u4ed6\u8d44\u6e90<\/strong><\/span><\/h3>\n<p><a href=\"https:\/\/statorials.org\/cn\/\u76ae\u5c14\u900a\u76f8\u5173\u7cfb\u6570-1\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u76ae\u5c14\u900a\u76f8\u5173\u7cfb\u6570\u6307\u5357<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/\u6e14\u6c11\u7684\u7cbe\u786e\u6d4b\u8bd5\/\" target=\"_blank\" rel=\"noopener noreferrer\">Fisher \u7cbe\u786e\u68c0\u9a8c\u6307\u5357<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/\u5361\u65b9\u72ec\u7acb\u6027\u68c0\u9a8c\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u5361\u65b9\u72ec\u7acb\u6027\u68c0\u9a8c\u6307\u5357<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Phi \u7cfb\u6570\uff08\u6709\u65f6\u79f0\u4e3a\u5747\u65b9\u5217\u8054\u7cfb\u6570\uff09\u662f\u4e24\u4e2a\u4e8c\u5143\u53d8\u91cf\u4e4b\u95f4\u5173\u8054\u6027\u7684\u5ea6\u91cf\u3002 \u5bf9\u4e8e\u7ed9\u5b9a\u4e24\u4e2a\u968f\u673a\u53d8\u91cfx\u548cy\u7684 2\u00d72 \u8868 [&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-1016","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>Phi \u7cfb\u6570\uff1a\u5b9a\u4e49\u548c\u793a\u4f8b - Statorials<\/title>\n<meta name=\"description\" content=\"Phi \u7cfb\u6570\u7684\u7b80\u5355\u89e3\u91ca\uff0c\u5305\u62ec\u5b9a\u4e49\u548c\u793a\u4f8b\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, 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