[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fnAWRWkg-xtIaLtA920buzGqXIickXfaNUCHZc7t0N_w":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-05-11 13:12:10",5053196,[8,9,10,11],"两头小,中间大","中间小,两头大","左边大,右边小","左边小,右边大",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},27,"d15a0557d7684f3e123f22dc5ee37c7d","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff4d17f13c0c82e5249d54f064acb0d5d.jpg","统计学","122bc62a75f24e5f89d199011b0b0f55","项目三 沙场练兵","U型分布的特征是( )",[21,32,41,50,59,68,71,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],5053191,[25,26,27,28],"将总体区分为性质相同的若干部分","将总体区分为性质不同的若干部分","将总体单位区分为性质相同的若干部分","将总体单位区分为性质不相同的若干部分","统计分组对总体而言是( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],5053192,[36,37,38,39],"所要说明的对象","说明总体的统计指标","描述研究对象的指标","分布在各栏中的指标数值","统计表中的主词是指( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],5053193,[45,46,47,48],"原始资料","第一手资料","初级资料","次级资料","某课题需要搜集资料,课题组成员从《统计年鉴》摘取有关资料,这种资料是( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],5053194,[54,55,56,57],"变量分组","平行分组","交叉分组","复杂分组","按照分组标志性质的不同,统计分组可分为品质分组和( )",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],5053195,[63,64,65,66],"次数分布","次数密度","各组次数","各组组距","对于不等距数列,在制作直方图时,应计算出( )",{"answer":69,"createTime":5,"id":6,"options":70,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":30,"type":31},[],5053197,[75,76,77,78],"各组的次数之比","各组的次数之差","各组的次数之和","各组次数与总次数之比","在次数分布中,频率是指( )",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],5053198,[84,85,86,87],"简单分组","复合分组","按品质标志分组","并列分组","对企业职工按技术等级分组,这样的分组属于( )",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],5053199,[93,94,95,96],"组内差异性,组间同质性","组内同质性,组间差异性","组内同质性,组间同质性","组内差异性,组间差异性","按某一标志分组的结果表现为( )",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],5053200,[102,103,104,105],"480","420","450","460","某连续变量数列,其第一组为开口组,上限为500,已知第二组的组中值为540,则第一组的组中值为( )"]