21春【兰大网院】医学统计学课程作业第一套

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【兰州大学网院】-医学统计学课程作业第一套
试卷总分:100    得分:100
第1题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>某疗养院测得</span><span lang=EN-US
  style='font-size:10.5pt'>100</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>名飞行员红细胞数（</span><span
  lang=EN-US style='font-size:10.5pt'>1012/L</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>），经检验该资料服从正态分布，其均数为</span><span lang=EN-US style='font-size:
  10.5pt'>4.14</span><span style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:
  'Cambria Math';mso-hansi-font-family:'Cambria Math''>（</span><span
  lang=EN-US style='font-size:10.5pt'>1012/L</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>），标准差为</span><span lang=EN-US style='font-size:10.5pt'>0.43</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>（</span><span lang=EN-US
  style='font-size:10.5pt'>1012/L</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>），求得的区间（</span><span lang=EN-US style='font-size:10.5pt'>4.14-1.96×0.43/10</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>～</span><span lang=EN-US
  style='font-size:10.5pt'>4.14+1.96×0.43/10</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>），称为红细胞数的（</span><span style='font-size:10.5pt'> </span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>）</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、99%参考值范围
B、95%参考值范围
C、99%可信区间
D、95%可信区间
正确资料:


第2题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>某医生欲研究加锌牛奶对儿童生长发育的影响，将某小学校</span><span
  lang=EN-US style='font-size:10.5pt'>10</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>岁儿童随机分为两组，一组加锌牛奶，另一组和普通牛奶，此属于（</span><span style='font-size:
  10.5pt'> </span><span style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:
  'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、假干预组
B、空白对照
C、标准对照
D、空准对照&#61472;
正确资料:


第3题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>非随机对照试验包括（</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、历史对照、平行对照、准实验
B、历史对照、前后对照、配对设计
C、空白对照、前后对照、准实验
D、历史对照、前后对照、准实验
正确资料:


第4题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>研究血清低密度脂蛋白</span><span lang=EN-US
  style='font-size:10.5pt'>LDL</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>与载脂蛋白</span><span
  lang=EN-US style='font-size:10.5pt'>B-100</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>的数量依存关系，应绘制的图形是</span><span lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、散点图
B、直方图
C、线图
D、条图
正确资料:


资料来源：谋学网（www.mouxue.com）,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>进行四组样本率比较的</span><span lang=EN-US
  style='font-size:10.5pt'><img style='vertical-align:text-bottom' src='http://otsstatic.chinaedu.net/ots/lzu/quesimages/413/20150702171033/yxtjx/image010.gif'/></span><span style='font-size:10.5pt;font-family:宋体;
  mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>检验，如</span><span
  lang=EN-US style='font-size:10.5pt'><img style='vertical-align:text-bottom' src='http://otsstatic.chinaedu.net/ots/lzu/quesimages/413/20150702171033/yxtjx/image012.gif'/></span><span style='font-size:10.5pt;font-family:宋体;
  mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>，可认为</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、四组样本率均不相同
B、&#61472;四组总体率均不相同
C、至少有两组样本率不相同
D、至少有两组总体率不相同
正确资料:


第6题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>两样本均数比较时，在其他条件相同情况时下，下列四种选择时，（</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）时检验效能最大。</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、α=0.05，n1=n2=20
B、α=0.01，n1=n2=30
C、α=0.05，n1=n2=30
D、α=0.01，n1=n2=20
正确资料:


第7题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  lang=EN-US style='font-size:10.5pt'><span
  style='mso-spacerun:yes'> </span></span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>欲表示某地区</span><span lang=EN-US style='font-size:10.5pt'>2003</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>年</span><span lang=EN-US
  style='font-size:10.5pt'>SARS</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>病人的职业构成，可绘制（</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、单式条图
B、圆图
C、直方图
D、线图
正确资料:


第8题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>关于随机抽样，下列那一项说法是正确的（</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）。</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、抽样时应使得总体中的每一个个体都有同等的机会被抽取
B、研究者在抽样时应精心挑选个体，以使样本更能代表总体
C、随机抽样即随意抽取个体
D、为确保样本具有更好的代表性，样本量应越大越好
正确资料:


第9题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>下列观测结果属于等级资料的是</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、收缩压测量值
B、&#61472;脉搏数
C、住院天数
D、&#61472;病情程度
正确资料:


资料来源：谋学网（www.mouxue.com）,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>某次研究进行随机抽样，测量得到该市</span><span
  lang=EN-US style='font-size:10.5pt'>100</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>名健康成年男子的血红蛋白数，则本次研究总体为：</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、所有成年男子
B、&#61472;该市所有成年男子
C、该市所有健康成年男子
D、100名该市成年男子
正确资料:


第11题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>在一项临床试验研究中，疗效分为"痊愈、显效、有效、无效"四个等级，现欲比较试验组与对照组治疗效果有无差别，宜采用的统计方法是</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、Wilcoxon秩和检验
B、列联表<img style='vertical-align:text-bottom' src='http://otsstatic.chinaedu.net/ots/lzu/quesimages/413/20150702171033/yxtjx/image020.gif'/>检验
C、四格表<img style='vertical-align:text-bottom' src='http://otsstatic.chinaedu.net/ots/lzu/quesimages/413/20150702171033/yxtjx/image020.gif'/>检验
D、&#61472;Fisher确切概率法
正确资料:


资料来源：谋学网（www.mouxue.com）,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>若</span><span lang=EN-US
  style='font-size:10.5pt'>A</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>事件和</span><span
  lang=EN-US style='font-size:10.5pt'>B</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>事件互不相容，则一定有（</span><span lang=EN-US style='font-size:10.5pt'><span
  style='mso-spacerun:yes'>   </span></span><span style='font-size:
  10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>）。</span><span lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、P(A+B)=P(a)+P(B)
B、P(A+B)=P(AB)
C、P(AB)=P(A)P(B)
D、P(A|B)=P(A)
正确资料:


第13题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>在两均数μ检验中，其无效假设为（</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、两个总体均数不同
B、两个样本均数不同
C、两个总体均数相同
D、两个样本均数相同
正确资料:


第14题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>均数与标准差之间的关系是</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、标准差越小，均数代表性越大
B、标准差越小，均数代表性越小
C、均数越大，标准差越小
D、均数越大，标准差越大
正确资料:


资料来源：谋学网（www.mouxue.com）,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>双变量（</span><span lang=EN-US
  style='font-size:10.5pt'>X,Y</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）中</span><span
  lang=EN-US style='font-size:10.5pt'>X</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>同时增加或减少一个相同的数后，则</span><span lang=EN-US style='font-size:
  10.5pt'><o:p></o:p></span></p>
  
A、r和b均不改变
B、b改变
C、r不变和b改变
D、r改变
正确资料:


第16题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>调查某单位科研人员论文发表的情况，统计每人每年的论文发表数应属于</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、计数资料
B、计量资料
C、总体
D、个体
正确资料:


第17题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>四个样本均数经方差分析后，</span><span lang=EN-US
  style='font-size:10.5pt'>P&lt;0.05,</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>为进一步弄清四个均数彼此之间有无差别，须进行（</span><span style='font-size:10.5pt'>
  </span><span style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:
  'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、χ2检验
B、q检验
C、u检验
D、t检验
正确资料:


第18题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>对于任何两个随机变量</span><span lang=EN-US
  style='font-size:10.5pt'>X1</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>和</span><span
  lang=EN-US style='font-size:10.5pt'>X2</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>，一定有（）</span><span lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、E(X1+X2)=E(X1)+E(X2)
B、V(X1+X2)=V(X1)+V(X2)
C、E(X1+X2)=E(X1)·E(X2)
D、V(X1+X2)=V(X1) ·V(X2)
正确资料:


第19题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  lang=EN-US style='font-size:10.5pt'><span
  style='mso-spacerun:yes'> </span></span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>标准正态分布曲线中间</span><span lang=EN-US style='font-size:10.5pt'>95%</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>的面积所对应的横坐标μ的范围是</span><span
  style='font-size:10.5pt'> <span lang=EN-US>( )<o:p></o:p></span></span></p>
  
A、-1.96～+1.96
B、-∞～+1.96
C、-1.96～+∞
D、-2.58～+2.58
正确资料:


资料来源：谋学网（www.mouxue.com）,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>两样本均数比较的</span><span lang=EN-US
  style='font-size:10.5pt'>t</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>检验和</span><span
  lang=EN-US style='font-size:10.5pt'>u</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>检验的主要差别是</span><span lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、t检验只能用于小样本资料
B、u检验要求大样本资料
C、t检验要求数据方差相同
D、t检验的检验效能更高
正确资料:


第21题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>对于完全随机设计资料的方差分析，组间均方肯定大于等于组内均方，</span><span
  lang=EN-US style='font-size:10.5pt'><span style='mso-spacerun:yes'>
  </span></span><span style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:
  'Cambria Math';mso-hansi-font-family:'Cambria Math''>即</span><span
  lang=EN-US style='font-size:10.5pt'>F</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>值不可能小于</span><span lang=EN-US style='font-size:10.5pt'>1</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>。</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
√、对
×、错
正确资料:×


第22题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>进行三个率差别的χ</span><span lang=EN-US
  style='font-size:10.5pt'>2</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>检验，当</span><span
  lang=EN-US style='font-size:10.5pt'>P</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>＜</span><span lang=EN-US style='font-size:10.5pt'>0.05</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>时，可认为各样本率之间总的来说有差别，但不能说明彼此之间都有差别。</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
√、对
×、错
正确资料:×


第23题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>非参数统计不依赖于总体分布类型，但可对总体参数进行统计推断。</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
√、对
×、错
正确资料:×


第24题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>四格表卡方检验中，</span><span lang=EN-US
  style='font-size:10.5pt'>X2&lt;X20.05</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>（</span><span lang=EN-US style='font-size:10.5pt'>v</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>）</span><span lang=EN-US
  style='font-size:10.5pt'>,</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>可认为两总体率相同</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
√、对
×、错
正确资料:√


资料来源：谋学网（www.mouxue.com）,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>如果两个变量的变动方向一致，同时呈上升或下降趋势，则二者是正相关关系。</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
√、对
×、错
正确资料:√


第26题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>比较某地区解放以来三种病的发病率在各年度的发展趋势，宜绘制（</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、普通线图
B、百分条图
C、半对数线图
D、圆图
正确资料:


第27题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  lang=EN-US style='font-size:10.5pt'>t&lt;t0.05</span><span style='font-size:
  10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>，ν，理论上认为（</span><span style='font-size:10.5pt'> </span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>）</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、总体均数差别无统计学意义
B、总体均数差别有统计学意义
C、样本均数差别无统计学意义
D、样本均数差别有统计学意义
正确资料:


第28题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>做</span><span lang=EN-US
  style='font-size:10.5pt'>5</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>个样本率的χ</span><span
  lang=EN-US style='font-size:10.5pt'>2</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>检验时，每组样本量均为</span><span lang=EN-US style='font-size:10.5pt'>50</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>，其自由度为（</span><span style='font-size:
  10.5pt'> </span><span style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:
  'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、249
B、246
C、1
D、4
正确资料:


第29题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>一个样本是否来自正态分布的矩法检验，下列哪项是非已知条件（</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、正态分布的均数和方差
B、样本的偏度系数
C、样本的偏度系数的标准差
D、样本的峰度系数
正确资料:


资料来源：谋学网（www.mouxue.com）,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>对于两组资料的比较，方差分析与</span><span lang=EN-US
  style='font-size:10.5pt'>t</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>检验的关系是</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、t检验结果更准确
B、方差分析结果更准确
C、t检验对数据的要求更为严格
D、完全等价
正确资料:


第31题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>四格表的周边合计不变时，如果实际频数有变化，则理论频数</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>（</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、增大
B、减小
C、不变
D、不确定
正确资料:


第32题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>正态分布（</span><span style='font-size:
  10.5pt'> </span><span style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:
  'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、其均数和几何均数相等
B、其均数和中位数相等
C、其中位数和几何均数相等
D、其均数、中位数、几何均数均不相等
正确资料:


第33题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>两样本均数比较，经</span><span lang=EN-US
  style='font-size:10.5pt'>t</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>检验，差别有显著性时，</span><span
  lang=EN-US style='font-size:10.5pt'>P</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>值越小，说明（</span><span style='font-size:10.5pt'> </span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>）</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、两样本均数差别越大
B、两总体均数差别越大
C、越有理由认为有差别
D、越有理由认为无差别
正确资料:


第34题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>某医学资料数据大的一端没有确定数值，描述其集中趋势适用的统计指标是</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、中位数
B、几何均数
C、均数
D、频数分布
正确资料:


第35题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>统计表的主要作用是</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、便于形象描述和表达结果
B、&#61472;客观表达实验的原始数据
C、容易进行统计描述和推断
D、&#61472;代替冗长的文字叙述和便于分析对比
正确资料:


第36题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>编制频数表时，分组数目一般取（</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、5～10组
B、8～15组
C、10～30组
D、15～20组
正确资料:


第37题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>两样本均数的比较，可用（</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、方差分析
B、t检验
C、q检验
D、方差分析与t检验均可
正确资料:


第38题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>变异系数主要用于</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、比较不同计量指标的变异程度
B、衡量正态分布的变异程度
C、衡量偏态分布的变异程度
D、衡量样本抽样误差的大小
正确资料:


第39题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>两个样本均数比较</span><span lang=EN-US
  style='font-size:10.5pt'>t</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>检验</span><span
  lang=EN-US style='font-size:10.5pt'>(</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>α＝</span><span lang=EN-US style='font-size:10.5pt'>0.05)</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>，当</span><span lang=EN-US
  style='font-size:10.5pt'>|t|</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>＞</span><span
  lang=EN-US style='font-size:10.5pt'>t0.05,(</span><span style='font-size:
  10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>ν</span><span lang=EN-US style='font-size:10.5pt'>)</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>时，统计</span><span style='font-size:10.5pt'>
  </span><span style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:
  'Cambria Math';mso-hansi-font-family:'Cambria Math''>结论为</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、两样本均数不同
B、&#61472;两样本均数相同
C、两总体均数不同
D、&#61472;两总体均数差别很大
正确资料:


第40题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>确定某指标的医学参考值范围时，其正常人是指（</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  lang=EN-US style='font-size:10.5pt'><o:p> </o:p></span></p>
  
A、从未患过病的人
B、只换过小病但不影响被研究指标的人
C、健康状况良好的人
D、排除影响被研究指标的疾病或因素的人
正确资料:


第41题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>样本</span><span lang=EN-US
  style='font-size:10.5pt'>1</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>，</span><span
  lang=EN-US style='font-size:10.5pt'>2</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>，</span><span lang=EN-US style='font-size:10.5pt'>3</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>，</span><span lang=EN-US
  style='font-size:10.5pt'>5</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>，</span><span
  lang=EN-US style='font-size:10.5pt'>6</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>，</span><span lang=EN-US style='font-size:10.5pt'>5</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>，</span><span lang=EN-US
  style='font-size:10.5pt'>6</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>，</span><span
  lang=EN-US style='font-size:10.5pt'>9</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>中数据</span><span lang=EN-US style='font-size:10.5pt'>5</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>的秩是</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、3.5
B、4.5
C、5.5
D、6.5
正确资料:


第42题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>一组原始数据呈正偏态分布，其数据的特点是（</span><span
  style='font-size:10.5pt'> </span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>）</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、数值离散度较小
B、数值离散度较大
C、数值分布偏向较大一侧
D、数值分布偏向较小一侧
正确资料:


第43题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>实验设计中，估计样本含量应该在经济允许条件下，越多越好。</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
√、对
×、错
正确资料:


第44题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>假设检验只回答差别有无统计学意义，而不能回答所比较事物的实际差别。</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
√、对
×、错
正确资料:


第45题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>对于配对设计资料的非参数检验，其假设应该是样本均数差值的中位数等于</span><span
  lang=EN-US style='font-size:10.5pt'>0</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>。</span><span lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
√、对
×、错
正确资料:


第46题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>五个百分率差别的假设检验，</span><span lang=EN-US
  style='font-size:10.5pt'>χ2</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>＞</span><span
  lang=EN-US style='font-size:10.5pt'>χ20.05,ν</span><span style='font-size:
  10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>，可认为各组总体率都不相同</span><span lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
√、对
×、错
正确资料:


第47题,
  
  <p class=MsoNormal align=left style='text-align:left;text-indent:10.5pt;
  mso-char-indent-count:1.0;line-height:12.0pt;mso-pagination:widow-orphan'><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>描述近似正态分布资料个体观察值离散趋势，宜用标准误。</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
√、对
×、错
正确资料: