[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fRhkSYGQEY6RRzKAlVOyJYHHXowGIVDVtdlTcywxa7ls":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":28,"type":29},[],"2026-01-24 09:55:54",316327992,[8,9,10,11],"SNK-q检验","检验","Dunnett-t检验","LSD-t检验",{"courseId":13,"courseImg":14,"courseName":15},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","多个实验组与一个对照组均数差别的多重比较宜作( )",[18,30,40,50,60,70,80,90,100,110],{"answer":19,"createTime":5,"id":20,"options":21,"question":27,"source":28,"type":29},[],316327983,[22,23,24,25,26],"两总体均数差别越大","越有理由认为两总体均数不同","可以认为样本均数和总体均数差别都很大","两样本均数差别越大","越有理由认为两样本均数不同","两样本均数比较,经t检验,差别有显著性时,P越小,说明( )","v1",0,{"answer":31,"createTime":5,"id":32,"options":33,"question":39,"source":28,"type":29},[],316327984,[34,35,36,37,38],"研究样本统计量","研究典型案例","由样本统计量推断总体参数","研究总体统计量","研究特殊个体特征","抽样的目的是( )",{"answer":41,"createTime":5,"id":42,"options":43,"question":49,"source":28,"type":29},[],316327985,[44,45,46,47,48],"Md≠0","μd≠0","以上都不对","差值的总体均数为0","差值的总体中位数为0","配对设计的秩和检验中,其H1假设为( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":59,"source":28,"type":29},[],316327986,[54,55,56,57,58],"中位数、均数、众数三者不一定全相等","以均值为中心,左右对称","曲线下面积为1","随着(x-μ)\u002Fσ的绝对值的增加,曲线由平均数μ所在点向左右两方迅速下降","在均数左右一个标准差处为曲线拐点","在有关正态分布的下列表述中错误的是( )",{"answer":61,"createTime":5,"id":62,"options":63,"question":69,"source":28,"type":29},[],316327987,[64,65,66,67,68],"等于1","等于0","大于0","可能大于0,小于0或等于0","小于0","直线相关分析中,若总体相关系数 ρ>0 ,则从该总体中抽取的样本相关系数( )",{"answer":71,"createTime":5,"id":72,"options":73,"question":79,"source":28,"type":29},[],316327988,[74,75,76,77,78],"减少样本标准差","控制总体变异","增大样本含量","增大样本标准差","减少样本含量","控制抽样误差可采用( )",{"answer":81,"createTime":5,"id":82,"options":83,"question":89,"source":28,"type":29},[],316327989,[84,85,86,87,88],"以α的可能性包含了未知总体参数真值的区间","总体参数取值的变动范围","总体参数以1-α的可能性被该区间包含","抽样误差的最大可能范围","以1-α的可能性包含了未知总体参数真值的区间","参数估计的置信度为1-α的置信区间表示( )",{"answer":91,"createTime":5,"id":92,"options":93,"question":99,"source":28,"type":29},[],316327990,[94,95,96,97,98],"X 对Y 的影响占Y变异的30%","Y 增加一个单位,X 平均减少30%","X 增加一个单位,Y 平均减少30%","X 增加一个单位,Y 平均减少0.30个单位","Y 增加一个单位,X 平均减少0.30个单位","在直线回归分析中,得到回归系数为-0.30,经检验有统计学意义,说明( )",{"answer":101,"createTime":5,"id":102,"options":103,"question":109,"source":28,"type":29},[],316327991,[104,105,106,107,108],"F=t²","F<t²","F²=t","F与t没有关系","F>t²","两个独立样本均数比较时,若同时采用t检验和方差分析,下列关系成立的是( )",{"answer":111,"createTime":5,"id":6,"options":112,"question":16,"source":28,"type":29},[],[8,9,10,11]]