Fw: \u907a\u50b3\u5b78 (\u6709\u8da3)<\/p>\n
\u6c7a\u5b9a\u667a\u5546\u7684\u516b\u5c0d\u57fa\u56e0 \u5168\u90e8\u90fd\u662f\u4f4d\u65bcX \u67d3\u8272\u9ad4\u4e0a\u9762\uff0c\u7537\u751f\u662f XY\uff0c X \u662f\u4f86\u81ea\u6bcd\u89aa\uff0cY\u662f
\n\u4f86\u81ea\u7236\u89aa\u3002<\/p>\n
\u6240\u4ee5\u7537\u751f\u7684\u667a\u5546\u5168\u90e8\u90fd\u662f\u4f86\u81ea\u6bcd\u89aa\u7684\u907a\u50b3\uff0c\u5973\u751f\u662fXX\uff0c\u6240\u4ee5\u5973\u751f\u7684\u667a\u5546\u662f\u7236\u89aa\u8ddf\u6bcd\u89aa
\n\u5404\u6709\u4e00\u534a\u5f71\u97ff\u3002<\/p>\n
\u56e0\u70ba\u5973\u751f\u7684\u667a\u5546\u662f\u7236\u89aa\u6bcd\u89aa\u90fd\u6709\u5f71\u97ff\uff0c\u6240\u4ee5\u6703\u6709\u4e2d\u548c\u7684\u6548\u61c9\u3002<\/p>\n
\u5973\u751f\u667a\u5546\u7684\u5206\u5e03\u6703\u5448\u73fe\u81ea\u7136\u5206\u5e03 (normal
\ndistribution)\uff0c\u5c31\u662f\u5012\u9418\u72c0\uff0c\u4e2d\u9593\u6700\u591a\uff0c\u5169\u908a\u8f03\u5c11\u3002<\/p>\n
\u7537\u751f\u56e0\u70ba\u662f\u5b8c\u5168\u53ea\u53d7\u4e00\u65b9\u5f71\u97ff\uff0c\u6240\u4ee5\u7537\u751f\u667a\u5546\u5206\u5e03\u6703\u5448\u73fe\u5728\u504f\u5411\u5728\u5169\u500b\u6975\u7aef\u3002<\/p>\n
\u4e5f\u5c31\u662f\u8aaa\uff0c\u7537\u751f\u5929\u624d\u6bd4\u8f03\u591a\uff0c\u4f46\u662f\u540c\u6642\uff0c\u8822\u6750\u4e4b\u4e2d\u4e5f\u662f\u7537\u751f\u7279\u5225\u591a\u3002<\/p>\n
\u9019\u500b\u6545\u4e8b\u544a\u8a34\u6211\u5011\u4ec0\u9ebc\uff1f\u300c\u4f60\u8981\u5224\u65b7\u4e00\u500b\u7537\u751f\u8070\u4e0d\u8070\u660e\uff0c\u770b\u4ed6\u5abd\u5abd\u5c31\u77e5\u9053\u4e86\u3002\u300d<\/p>\n
\u53ef\u662f\uff0c\u4f60\u53c8\u8981\u600e\u9ebc\u5224\u65b7\u4e00\u500b\u7537\u751f\u7684\u5abd\u5abd\u8070\u4e0d\u8070\u660e\uff1f ……..\u7136\u5f8c\u6211\u5011\u7528\u6a5f\u7387\u4f86\u7b97\uff1a
\n
\n\u751f\u7537\u5b69\u7684\u6a5f\u7387= 1\/2\uff1b\u751f\u5973\u5b69\u7684\u6a5f\u7387 =1\/2\u3002
\n\u751f\u7537\u5b69\u7684\u6642\u5019\uff0c\u6bcd\u89aa\u5c0d\u7537\u5b69\u667a\u5546\u7684\u5f71\u97ff\u529b= 1
\n\u751f\u5973\u5b69\u7684\u6642\u5019\uff0c\u6bcd\u89aa\u5c0d\u5973\u5b69\u667a\u5546\u7684\u5f71\u97ff\u529b= 1\/2<\/p>\n
\u6240\u4ee5\u8aaa\u6bcd\u89aa\u8ddf\u7236\u89aa\u5c0d\u65bc\u4e0b\u4e00\u4ee3\u667a\u5546\u7684\u5f71\u97ff\u529b (\u671f\u671b\u503c) \u7684\u6bd4\u4f8b\u662f<\/p>\n
(1*1\/2 + 1\/2*1\/2)\uff1a( 0*1\/2 + 1\/2*1\/2) \uff1d0.75\uff1a 0.25\uff1d 3\uff1a1 \uff1d\u6bcd\uff1a\u7236<\/p>\n
\u6240\u4ee5\u8aaa\uff0c\u5982\u679c\u4f60\u662f\u7537\u751f\uff0c\u5982\u679c\u4f60\u89ba\u5f97\u4f60\u5f88\u7b28\u7684\u8a71\u3002<\/p>\n
\u4f60\u5343\u842c\u8981\u5a36\u4e00\u500b\u8070\u660e\u7684\u5973\u751f\u4f86\u3002<\/p>\n
\u9019\u6a23\u4f60\u5c0f\u5b69\u7ffb\u76e4\u7684\u6a5f\u7387\u9084\u6709\u4e03\u6210\u4e94\uff0c\u4eba\u751f\u9084\u662f\u5145\u6eff\u4e86\u5e0c\u671b\u3002<\/p>\n
\u662f\u5973\u751f\uff0c\u5982\u679c\u4f60\u89ba\u5f97\u4f60\u5f88\u7b28\u7684\u8a71\uff0c\u56e0\u70ba\uff0c\u4f60\u7ffb\u4eba\u5bb6\u76e4\u7684\u6a5f\u7387\u6709\u4e03\u6210\u4e94\u554a\uff0c\u6211\u4e0d\u80fd\u518d\u8aaa..\u3002<\/p>\n
\u7e3d\u4e4b\uff0c\u6700\u8fd1\u5929\u6c23\u4e0d\u932f\uff0c\u51fa\u53bb\u8d70\u8d70\u3002<\/p>\n
\u7576\u4f60\u770b\u5230\u4e00\u500b\u7537\u751f\u5f88\u8070\u660e\u7684\u6642\u5019\uff0c\u5247\u4ed6\u7236\u89aa\u5f88\u8070\u660e\u7684\u6a5f\u7387\u662f 0% ( \u61c9\u8a72\u8aaa..\u5c31\u7b97\u4ed6\u7236
\n\u89aa\u5f88\u8070\u660e\uff0c\u4e5f\u5c0d\u4ed6\u662f\u6c92\u6709\u5f71\u97ff\u7684)\uff0c\u53ef\u662f\u4ed6\u6bcd\u89aa\u5f88\u8070\u660e\u7684\u6a5f\u7387\u662f100%\u3002<\/p>\n
\u6240\u4ee5\u8aaa\uff0c\u5982\u679c\u4f60\u5728\u8003\u616e\u8981\u5ac1\u7d66\u4e00\u500b\u5f88\u8070\u660e\u7684\u7537\u751f\u7684\u6642\u5019\uff0c\u4f60\u5c31\u8981\u5c0f\u5fc3\u4ed6\u5abd\u5abd\uff0c\u53ef\u80fd\u6703
\n\u662f\u4e00\u500b\u5f88\u6703\u7b97\u8a08\u7684\u5a46\u5a46\u3002<\/p>\n
\u53cd\u4e4b\uff0c\u7576\u4f60\u770b\u5230\u4e00\u500b\u7537\u751f\u5f88\u7b28\u7684\u6642\u5019\uff0c\u6c92\u932f\uff0c\u4ed6\u901a\u5e38\u6703\u5f88\u6709\u9322\uff0c\u9019\u662f\u4e0a\u5e1d\u7684\u5b89\u6392\uff0c\u4e0a
\n\u5e1d\u70ba\u4e86\u4e0d\u8b93\u4eba\u985e\u6ec5\u4ea1\uff0c\u6240\u4ee5\u4ed6\u6703\u8b93\u5f88\u7b28\u7684\u4eba\u5f88\u6709\u9322\uff0c\u9019\u6a23\u4ed6\u624d\u80fd\u5a36\u5230\u8070\u660e\u7684\u5973\u751f\u3002<\/p>\n
\u7e3d\u4e4b\uff0c\u7576\u4f60\u770b\u5230\u5f88\u7b28\u7684\u7537\u751f\u7684\u6642\u5019\uff0c\u4e0d\u8981\u7336\u8c6b\uff0c\u5ac1\u7d66\u4ed6\u3002<\/p>\n
\u4e0d\u8981\u89ba\u5f97\u4f60\u662f\u70ba\u4e86\u4ed6\u7684\u9322\uff0c\u4f60\u8981\u8ddf\u81ea\u5df1\u8aaa\uff0c\u4f60\u662f\u70ba\u4e86\u8981\u6539\u5584\u4eba\u985e\u672a\u4f86\u7684\u57fa\u56e0\u3002<\/p>\n
\u4ee5\u4e0a\u4e09\u500b\u7d50\u8ad6\u70ba\uff1a\u4eba\u985e\u667a\u5546\u7406\u6027\u9435\u86cb\u5b9a\u5f8b<\/p>\n
\u6211\u91cd\u8907\u4e00\u6b21\uff1a<\/p>\n
\u5224\u65b7\u7537\u751f\u667a\u5546\uff0c\u770b\u5abd\u5abd\u2192\u5abd\u5abd\u8070\u660e\uff0c\u5152\u5b50\u8070\u660e\u3002<\/p>\n
\u7b28\u7537\u751f\u7121\u8ad6\u5982\u4f55\u4e5f\u8981\u5a36\u8070\u660e\u5973\u751f\u2192\u6539\u826f\u54c1\u7a2e\u3002<\/p>\n
\u5973\u751f\u4e0d\u8981\u5ac1\u8070\u660e\u7537\u751f\uff0c\u61c9\u5ac1\u7d66\u7b28\u7537\u751f\u2192\u514d\u5f97\u6709\u500b\u8070\u660e\u53b2\u5bb3\u7684\u5a46\u5a46\u3002 <\/p>\n","protected":false},"excerpt":{"rendered":"
Fw: \u907a\u50b3\u5b78 (\u6709\u8da3) \u6c7a\u5b9a\u667a\u5546\u7684\u516b\u5c0d\u57fa\u56e0 \u5168\u90e8\u90fd\u662f\u4f4d\u65bcX \u67d3\u8272\u9ad4\u4e0a\u9762\uff0c\u7537\u751f\u662f XY\uff0c X \u662f\u4f86\u81ea\u6bcd\u89aa\uff0cY\u662f \u4f86\u81ea\u7236\u89aa\u3002 \u6240\u4ee5\u7537\u751f\u7684\u667a\u5546\u5168\u90e8\u90fd\u662f\u4f86\u81ea\u6bcd\u89aa\u7684\u907a\u50b3\uff0c\u5973\u751f\u662fXX\uff0c\u6240\u4ee5\u5973\u751f\u7684\u667a\u5546\u662f\u7236\u89aa\u8ddf\u6bcd\u89aa \u5404\u6709\u4e00\u534a\u5f71\u97ff\u3002 \u56e0\u70ba\u5973\u751f\u7684\u667a\u5546\u662f\u7236\u89aa\u6bcd\u89aa\u90fd\u6709\u5f71\u97ff\uff0c\u6240\u4ee5\u6703\u6709\u4e2d\u548c\u7684\u6548\u61c9\u3002 \u5973\u751f\u667a\u5546\u7684\u5206\u5e03\u6703\u5448\u73fe\u81ea\u7136\u5206\u5e03 (normal distribution)\uff0c\u5c31\u662f\u5012\u9418\u72c0\uff0c\u4e2d\u9593\u6700\u591a\uff0c\u5169\u908a\u8f03\u5c11\u3002 \u7537\u751f\u56e0\u70ba\u662f\u5b8c\u5168\u53ea\u53d7\u4e00\u65b9\u5f71\u97ff\uff0c\u6240\u4ee5\u7537\u751f\u667a\u5546\u5206\u5e03\u6703\u5448\u73fe\u5728\u504f\u5411\u5728\u5169\u500b\u6975\u7aef\u3002 \u4e5f\u5c31\u662f\u8aaa\uff0c\u7537\u751f\u5929\u624d\u6bd4\u8f03\u591a\uff0c\u4f46\u662f\u540c\u6642\uff0c\u8822\u6750\u4e4b\u4e2d\u4e5f\u662f\u7537\u751f\u7279\u5225\u591a\u3002 \u9019\u500b\u6545\u4e8b\u544a\u8a34\u6211\u5011\u4ec0\u9ebc\uff1f\u300c\u4f60\u8981\u5224\u65b7\u4e00\u500b\u7537\u751f\u8070\u4e0d\u8070\u660e\uff0c\u770b\u4ed6\u5abd\u5abd\u5c31\u77e5\u9053\u4e86\u3002\u300d \u53ef\u662f\uff0c\u4f60\u53c8\u8981\u600e\u9ebc\u5224\u65b7\u4e00\u500b\u7537\u751f\u7684\u5abd\u5abd\u8070\u4e0d\u8070\u660e\uff1f ……..\u7136\u5f8c\u6211\u5011\u7528\u6a5f\u7387\u4f86\u7b97\uff1a<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1212","post","type-post","status-publish","format-standard","hentry","category-1","content-layout-excerpt-thumb"],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/jir.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1212","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jir.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jir.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jir.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jir.idv.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1212"}],"version-history":[{"count":2,"href":"https:\/\/jir.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1212\/revisions"}],"predecessor-version":[{"id":1213,"href":"https:\/\/jir.idv.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1212\/revisions\/1213"}],"wp:attachment":[{"href":"https:\/\/jir.idv.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1212"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jir.idv.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1212"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jir.idv.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}