[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fMbwI_y7vmCNPnAHu-kCiX3jIsA_PbfsXRxNldaKP6C4":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2023-10-18 19:21:43",100532032,[8,9,10,11],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6bdbe82f006474fbe9cb5fbc5cb111f8.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbbd46945f7526feea925cec3775b75ac.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe02c9b4c74d4d59191c0dd71f98299d8.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcb09c0d56516dd16e8d34214d0c42a27.webp\">",{"courseId":13,"courseImg":14,"courseName":15},"8c1b6e9419b70ffda603500d61e311f9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F608a9913e4436ea056b9240a5122abf7.jpg","医学统计学","参数估计中的可信度是指",[18,29,38,47,50,59,68,78,89],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],100532025,[22,23,24,25],"由抽样引起的样本均数与总体均数之间的差异","由抽样引起的样本统计量与总体参数之间的差别","统计上凡样本指标与总体指标之间的差异","统计上凡样本统计量与总体参数之间的差异","关于抽样误差的概念,最恰当的是","v1",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],100532027,[33,34,35,36],"变异系数","S","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffd6e05d49da9ee1a6bc7e0c151f1184f.png\">","四分位数间距","对同一总体均数进行估计时,以下何者较小时,表示用该样本均数估计总体均数的可靠性较大",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":28},[],100532029,[42,43,44,45],"控制总体中的个体变异","严格挑选观察对象","改善观测条件","增加观测例数","要减小抽样误差,最切实可行的方法是",{"answer":48,"createTime":5,"id":6,"options":49,"question":16,"source":27,"type":28},[],[8,9,10,11],{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":27,"type":28},[],100532035,[54,55,56,57],"总体中有95%的变量值在此范围内","总体均数不在此范围内的可能性为5%","用这种方法估计总体均数,理论上有95%是正确的","总体均数有95%的可能性在此范围","关于区间 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa2cd30652b540dc89ef87259c37e1c98.png\"> ,下列说法错误的是",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":27,"type":28},[],100532037,[63,64,65,66],"样本例数太少","测量不准确","因个体差异产生的抽样误差","总体均数不同,所以测量结果不等","已知某地25岁正常成年男性的平均收缩压为113.0mmHg,从该地随机抽取20名25岁正常成年男性,测得其平均收缩压为119.0 mmHg.119.0mmHg 与113.0mmHg不同,主要原因是",{"answer":69,"createTime":70,"id":71,"options":72,"question":77,"source":27,"type":28},[],"2023-10-18 19:21:44",100532041,[73,74,75,76],"95%的可信区间比99%的可信区间精度差","95%的可信区间比99%的可信区间准确度高","95%的可信区间比99%的可信区间好","95%的可信区间比99%的可信区间更窄","对于同一资料而言,下列关于可信区间的说法,正确的是",{"answer":79,"createTime":80,"id":81,"options":82,"question":87,"source":27,"type":88},[],"2023-10-25 16:17:53",101494345,[83,84,85,86],"只要进行抽样研究,就会存在抽样误差","对某医院近3年全部手术病人的疗效进行评估,所获得的结果不存在抽样误差","增大研究的样本量,会减少抽样误差","尽管存在抽样误差,研究获得的样本均数或样本率仍然可以作为其总体参数的一个最合理的估计值","下列说法,正确的有",1,{"answer":90,"createTime":80,"id":91,"options":92,"question":97,"source":27,"type":88},[],101494346,[93,94,95,96],"设计对照组原则","随机化分配原则","重复原则","盲法观测原则","实验研究设计的原则中,与抽样误差控制有关的有"]