[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f8x-RnI8K5Dcz4yjtA98WELEd0oOqLXR2qh1fYVT5hMA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":13,"question":17,"related":18,"source":29,"type":30},[],"2023-08-10 16:59:09",95684170,[8,9,10,11,12],"随机抽样与随机分配","随机抽样与匹配","随机抽样与足够的样本含量","匹配与限制","足够的样本含量与限制",{"courseId":14,"courseImg":15,"courseName":16},"4837d3f5222cb239b91ca6db20410a2f","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F64d51025bae4d297fe98cad88352a1e2.jpg","科研设计与医学统计学","保证样本对总体有良好代表性的基本措施为",[19,31,36,46,56,59,69,79,89,99],{"answer":20,"createTime":5,"id":21,"options":22,"question":28,"source":29,"type":30},[],95684166,[23,24,25,26,27],"统计设计","收集资料","整理资料","录入资料","分析资料","关于统计工作的基本步骤,不包括","v1",0,{"answer":32,"createTime":5,"id":33,"options":34,"question":35,"source":29,"type":30},[],95684167,[23,24,25,26,27],"统计工作最关键的步骤是",{"answer":37,"createTime":5,"id":38,"options":39,"question":45,"source":29,"type":30},[],95684168,[40,41,42,43,44],"S","Z","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe059259dfc4ddd34cbaa4bc0c8bd8f3a.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc27c751c7bdefa68ba87943c81d93d39.webp\">","t","统计学中,下列符号一般表示总体参数的为",{"answer":47,"createTime":5,"id":48,"options":49,"question":55,"source":29,"type":30},[],95684169,[50,51,52,53,54],"所有糖尿病患者","所有成都市居民","2017年所有成都市居民","2017年所有40岁及以上成都市居民","2017年成都市40岁及以上居民中的糖尿病患者","在有关2017年成都市40岁及以上居民糖尿病患病率的调查研究中,其总体是",{"answer":57,"createTime":5,"id":6,"options":58,"question":17,"source":29,"type":30},[],[8,9,10,11,12],{"answer":60,"createTime":5,"id":61,"options":62,"question":68,"source":29,"type":30},[],95684171,[63,64,65,66,67],"文化程度","职业","性别","血型","户口类型","下列有关个人基本信息的指标中,根据其原始测量值,属于有序定性变量的是",{"answer":70,"createTime":5,"id":71,"options":72,"question":78,"source":29,"type":30},[],95684172,[73,74,75,76,77],"P=0","P≤0.05","P≥0.01","P≥0.05","P≤0.5","统计学上小概率事件的发生概率一般是指",{"answer":80,"createTime":5,"id":81,"options":82,"question":88,"source":29,"type":30},[],95684173,[83,84,85,86,87],"常见变量包括定量变量、无序定性变量和有序定性变量","定量变量、无序定性变量和有序定性变量间可以相互进行转换","有序定性变量兼具定性变量与定量变量的部分性质","有序定性变量又称为半定量变量或等级变量","变量值由仪器测量获得,表现为数字且有单位的变量为定量变量","下列有关统计学上变量的说法错误的是",{"answer":90,"createTime":5,"id":91,"options":92,"question":98,"source":29,"type":30},[],95684174,[93,94,95,96,97],"总体是根据研究目的确定的,不同的研究有不同的总体","总体中的个体是同质的,不存在变异","总体是所有观察单位形成的集合,或观察单位所有变量值的集合","样本是从总体中抽取出的一部分个体形成的集合","抽样的目的在于利用样本信息推断总体特征","关于总体和样本,下列说法中不正确的是",{"answer":100,"createTime":5,"id":101,"options":102,"question":108,"source":29,"type":30},[],95684175,[103,104,105,106,107],"可根据样本信息计算获得","一般用拉丁字母表示","为随机变量,取决于样本中观察单位的组合","其取值是唯一且确定的","可以用来估计总体参数","关于样本统计量的说法错误的是"]