[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fZDx_r09Wm_hRu0XPQxfWRP9VCSCbeCmPJ4KFHT69Jig":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":13,"question":20,"related":21,"source":32,"type":33},[],"2023-05-12 23:58:00",8458275,[8,9,10,11,12],"距回归直线的纵向距离相等","距回归直线的纵向距离平方和最小","距回归直线的纵向距离最小","距回归直线的垂直距离相等","距回归直线的垂直距离平方和最小",{"count":14,"courseId":15,"courseImg":16,"courseName":17,"workId":18,"workName":19},18,"d445524ac54c035f014bb4ca1689e6ee","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3e81ee6c4f71fef9097a79c96f347499.jpg","医学统计学","609b4de5c464434d9c802c1fcf56aa15","第十四章 直线回归分析【选择题】","最小二乘法的原理是各实测点",[22,34,44,54,64,74,84,94,97,107],{"answer":23,"createTime":5,"id":24,"options":25,"question":31,"source":32,"type":33},[],8458268,[26,27,28,29,30],"截距\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7fead94e9c30de6de3cde5e545f05f5d.png\">","回归系数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff4daeb14d4a195d5669ea3bdbaa017c1.png\">","相关系数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2ea852f217546e1813a5cbf3ade3be8a.png\">","决定系数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fac62948aa5f43f32eb421e2aeb16aeb7.png\">","总离均差平方和\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0bea9f46eae5611956f9d4b0d609e50d.png\">","直线回归分析中,用于评价回归方程预测效果的指标是","v1",0,{"answer":35,"createTime":5,"id":36,"options":37,"question":43,"source":32,"type":33},[],8458269,[38,39,40,41,42],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6e59ef4698dc82acb109c9843e663021.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F652d9f265f93923217f541046a49c38e.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7058914d6ead7a5f9c59e771f7e981d4.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Faec9b73f9c860248abc10bf964d626e0.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F607e1c7261c196bd6761c75317341704.png\">","针对同一抽样研究资料的直线回归分析和直线相关分析中,下列不一定成立的是",{"answer":45,"createTime":5,"id":46,"options":47,"question":53,"source":32,"type":33},[],8458270,[48,49,50,51,52],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdb12a7368dda77cba1b1eb15741e466d.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcea52734574873ccecb235598af786d4.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Faf69ff3d121bda7ee44583f22a3ffd79.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6bf4fc57f43b967cae111d6dc869389b.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc5f0df9b82e542ecdfaea7c4d8b7c881.png\">","对于一组服从双变量正态分布的资料,经直线相关分析得相关系数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9009e4a1204f0adc4e941d032ee2f1e3.png\">,若对该资料拟合回归直线,其回归系数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff4daeb14d4a195d5669ea3bdbaa017c1.png\">",{"answer":55,"createTime":5,"id":56,"options":57,"question":63,"source":32,"type":33},[],8458271,[58,59,60,61,62],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa8504fdbc6f84ad77eb81c5c5ab50e62.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9d998edeb46d64fbd89906797b122248.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9d59d7d9f7b118e49777accac954880f.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F709d9710a5bfa06c69ba6a44e0ea6ab1.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fea5449e240d186d7da8f47c235b6eb03.png\">","一组服从双变量正态分布的资料,经直线相关分析得相关系数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F960369534961500ed7b9f25a3deecc6c.png\">,则有",{"answer":65,"createTime":5,"id":66,"options":67,"question":73,"source":32,"type":33},[],8458272,[68,69,70,71,72],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc6a9c2ca9101c74392ae29710d4e6e31.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdb1dcca9aff27098e1a769586619b01b.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F33f4aae1c117ba8eb866ea328a763519.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa407fd4b6e3190ef992038944e52f4b2.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa11c54c4a81a2790e526004ad482275e.png\">","某抽样研究资料,变量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb7753aaa055a9dfac7fd9b31f988d1d5.png\">与\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff7d0c48c9d6d9e587afc032c3fedea26.png\">的标准差相等时,若同时进行直线回归分析和直线相关分析,以下正确的是",{"answer":75,"createTime":5,"id":76,"options":77,"question":83,"source":32,"type":33},[],8458273,[78,79,80,81,82],"截距等于0","截距等于\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F86a1e4e7bedf2ecaed0f50e6f7add4f7.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F190dda25ff450949b7307b3f602183ad.png\">等于0","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd6c466c476726a6b341e1b9aed35d8fe.png\">等于0","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F190dda25ff450949b7307b3f602183ad.png\">等于\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1479e5fffc7c2afab11ebb326b29440f.png\">","若直线回归系数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Faf69ff3d121bda7ee44583f22a3ffd79.png\">,则一定有",{"answer":85,"createTime":5,"id":86,"options":87,"question":93,"source":32,"type":33},[],8458274,[88,89,90,91,92],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1d14c6dc0f5a3af47eb3e74b5536dd2d.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa90088b4693dca681f56cb0810c6b903.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa552410aaf9f0b2e526ae1d1c86245fc.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F78e4d3c94027e9fc5d292ddfdd9b8d31.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fee18cdcb1e5ebce037809d48e0e24356.png\">","两组服从双变量正态分布的资料,若两样本回归系数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F59a44f7335fa1b97d3c15da4229ff671.png\">,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc65b185bb34fc81c034896e670371bd1.png\">,则一定有",{"answer":95,"createTime":5,"id":6,"options":96,"question":20,"source":32,"type":33},[],[8,9,10,11,12],{"answer":98,"createTime":5,"id":99,"options":100,"question":106,"source":32,"type":33},[],8458276,[101,102,103,104,105],"所有实测点都应在回归直线上","所绘回归直线必过点\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5829c45416c640b90020e0412b380be4.png\">","回归直线必过原点","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd239c7bdb5e8b6e4f772a3caf10a58f0.png\">的取值范围为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe0b0e69d946aa684e200781d78f648c4.png\">","实测值与估计值之差的平方和必小于零","直线回归分析中,按直线方程\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd37f7dd3d10db15152a94776742cae43.png\">,代入两点绘制回归直线,以下选项中正确的是",{"answer":108,"createTime":5,"id":109,"options":110,"question":116,"source":32,"type":33},[],8458277,[111,112,113,114,115],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48748cfa813a6a493e79eebfa4a679eb.png\">时,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0912adc989a580c5ccd40e5249b09569.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1aef2ac3edcc79ec59f55c3d5ba0f3ec.png\">时,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdb12a7368dda77cba1b1eb15741e466d.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc0e44a4e28dcf8301670cab4612895fa.png\">时,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdb12a7368dda77cba1b1eb15741e466d.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc0e44a4e28dcf8301670cab4612895fa.png\">时,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcea52734574873ccecb235598af786d4.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2cb7349cf1a0e285457760ba8f40b9c0.png\">","同一资料进行直线回归与直线相关分析时,下列说法正确的是"]