[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fB701sjoVExlngLCy1l0BP94DxNXX0Dz3go9iifenMXM":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2025-06-16 14:41:11",201697223,[8,9,10,11],"方差","变异系数","标准差","四分位数间距",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},10,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_19012388","第二章练习","比较身高和体重的两组数据变异度大小用",[21,33,42,48,57,60,69,76,82,88],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2025-06-16 14:41:10",201697162,[26,27,28,29],"正偏态分布","负偏态分布","正态分布","任意分布","均数和标准差能用于全面描述下列哪种资料的特征","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],201697173,[37,38,39,40],"几何均数","中位数","相对数","算数均数","当各观察值呈倍数变化时,平均数应用",{"answer":43,"createTime":5,"id":44,"options":45,"question":47,"source":31,"type":32},[],201697185,[46,10,9,11],"全距","描述一组偏态分布资料的离散趋势,下列哪个指标较好",{"answer":49,"createTime":5,"id":50,"options":51,"question":56,"source":31,"type":32},[],201697198,[52,53,54,55],"均数不变,标准差改变","均数改变,标准差不变","两者均不变","两者均改变","各观察值均加或减同一个非0常数后",{"answer":58,"createTime":5,"id":6,"options":59,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":61,"createTime":5,"id":62,"options":63,"question":68,"source":31,"type":32},[],201697232,[64,65,66,67],"95%","97.5%","49.5%","47.5%","横轴上,正态曲线下从u-1.96a到u的面积为",{"answer":70,"createTime":71,"id":72,"options":73,"question":75,"source":31,"type":32},[],"2025-06-16 14:41:12",201697248,[74,38,11,37],"算术均数","偏态分布应该用哪个指标描述其分布的集中趋势",{"answer":77,"createTime":71,"id":78,"options":79,"question":81,"source":31,"type":32},[],201697283,[74,37,38,80],"极差","表示血清抗体滴度资料平均水平最常计算",{"answer":83,"createTime":84,"id":85,"options":86,"question":87,"source":31,"type":32},[],"2025-06-16 14:41:14",201697295,[74,37,38,10],"最小组段无下限或最大组段无上限的频数分布资料,可以用哪个指标描述其集中趋势",{"answer":89,"createTime":84,"id":90,"options":91,"question":96,"source":31,"type":32},[],201697309,[92,93,94,95],"8天","9天","10天","10.5天","已知某疾病患者7人的潜伏期分别为6、13、5、8、12、10、15,其平均潜伏期为"]