[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fLx5CS6JgfQr5mVt-HMIgdsXpTbLC4b-urFHKfopaYtU":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":13,"question":20,"related":21,"source":31,"type":32},[],"2024-04-15 12:53:50",138432055,[8,9,10,11,12],"35%","16.7%","18.3%","17.5%","无法计算",{"count":14,"courseId":15,"courseImg":16,"courseName":17,"workId":18,"workName":19},15,"f5ddaa714c35a43015508af9f69dbd67","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4cc6c4c1610fb9478ff594e058efaea7.jpg","预防医学","work_34323282","《分类变量统计描述》练习题","随机选取男200人,女100人为某传染病研究的调查对象,测得其感染阳性率分别为20%和15%,则合并阳性率为( )",[22,33,42,51,56,62,71,80,90,93],{"answer":23,"createTime":5,"id":24,"options":25,"question":30,"source":31,"type":32},[],138432047,[26,27,28,29],"率","构成比","频率","相对比","下列指标中,________可用来反映男性吸烟率是女性者的倍数","v1",0,{"answer":34,"createTime":5,"id":35,"options":36,"question":41,"source":31,"type":32},[],138432048,[37,38,39,40],"相对比是两个有关指标之比","两个指标性质必须相同","相对比可以大于1","相对比可以小于1","有关相对比,以下不正确的是",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":31,"type":32},[],138432049,[46,47,48,49],"表示两个同类指标的比","表示某现象发生的强度","各构成部分合计一定等于100%","表示某现象在时间顺序上的排列","有关构成比以下哪项是正确的",{"answer":52,"createTime":5,"id":53,"options":54,"question":55,"source":31,"type":32},[],138432050,[26,27,28,29],"下列指标中,可以用来说明两个有关联的指标之比的是________",{"answer":57,"createTime":5,"id":58,"options":59,"question":61,"source":31,"type":32},[],138432051,[60,26,27,29],"平均数","说明某现象发生强度的指标为",{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":31,"type":32},[],138432052,[66,67,68,69],"麻疹易感儿数","麻疹患儿人数","麻疹疫苗接种人数","麻疹疫苗接种后的阳转人数","计算麻疹疫苗接种后血清检查的阳转率,分母为________",{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":31,"type":32},[],138432053,[75,76,77,78],"易感人数","患儿人数","疫苗接种人数","疫苗接种后阳转人数","在麻疹疫苗接种后血清检查阳转率的计算中,分子应为________",{"answer":81,"createTime":5,"id":82,"options":83,"question":89,"source":31,"type":32},[],138432054,[84,85,86,87,88],"出生率","某病发病率","某种金属元素体内含量的百分位数","死因构成比","女婴与男婴的性别比","以下哪个指标不属于相对数指标( )",{"answer":91,"createTime":5,"id":6,"options":92,"question":20,"source":31,"type":32},[],[8,9,10,11,12],{"answer":94,"createTime":5,"id":95,"options":96,"question":101,"source":31,"type":32},[],138432056,[97,98,99,100],"计算相对数尤其是率时应有足够数量的观察单位或观察次数","分析大数据时可以构成比代替率","因分别将分子和分母合计求合计率或平均率","相对数的比较因注意其可比性","下列哪种说法是错误的( )"]