21春【兰大网院】医学统计学课程作业第三套

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【兰州大学网院】-医学统计学课程作业第三套
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''>对医学计量资料成组比较</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''>相对参数检验来说，非参数秩和检验的优点是</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、适用范围广
B、&#61472;检验效能高
C、检验结果更准确
D、&#61472;充分利用资料信息
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''>以下何种情况进行单侧检验</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、已知A药肯定优于B药
B、&#61472;当不能明确是A药好还是B药好
C、已知A药一定不会比B药差
D、&#61472;已知A药与B药差不多
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''>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''>多个样本均数的两两比较，可采用</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''>。</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、常规t检验
B、u检验
C、SNK检验
D、F检验
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''>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''>在进行</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''>检验时，</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''>值和α值的关系</span><span lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、p值是研究者事先确定的
B、值和α值意义相同，且数值一定相等
C、p值和α值意义相同，且数值不等
D、α值是研究者事先确定的
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
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>利用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''>检验公式不适合解决的实际问题是</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、比较两种药物的有效率
B、&#61472;检验某种疾病与基因多态性的关系
C、两组有序试验结果的药物疗效
D、&#61472;药物三种不同剂量显效率有无差别
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''>制作频数分布表时，分组数目一般取（</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''>）组</span><span lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、5-10
B、8-15
C、10-30
D、越多越好
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''>实验设计的基本原则是（</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、随机化、盲法、设置对照
B、重复、对照、随机化、盲法
C、随机化、盲法、配对
D、重复、均衡、随机化&#61472;
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''>回归系数的最小二乘估计使其平方和最小的是</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、各点到X均数直线的横向距离
B、&#61472;各点到X轴的横向距离
C、各点到回归直线的垂直距离
D、&#61472;各点到Y均数直线的垂直距离
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
  lang=EN-US style='font-size:10.5pt'>&#61489;&#61591;&#61495;</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>岁儿童可以用年龄（岁）估计体重（市斤），回归方程为</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/image024.gif'/></span><span style='font-size:10.5pt;font-family:宋体;
  mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>，若将体重换成国际单位，则此方程</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、常数项改变
B、&#61472;回归系数改变
C、常数项和回归系数都改变
D、常数项和回归系数都不改变
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''>成组设计两样本比较（例数不等）的秩和检验，其检验统计量</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''>是</span><span lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、以秩和较小者为T
B、以秩和较大者为T
C、以例数较小者秩和为T
D、以例数较大者秩和为T
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''>完全随机设计方差分析中的组间均方反映的是</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、随机测量误差大小
B、某因素效应大小
C、处理因素效应与随机误差综合结果
D、全部数据的离散度
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''>现有</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''>、</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''>两资料，经μ检验得：</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''>资料检验结果为</span><span lang=EN-US
  style='font-size:10.5pt'>&lt;0.01</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'>B</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>资料的检验结果为</span><span lang=EN-US
  style='font-size:10.5pt'>0.01&lt&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''>，可以认为</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 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、A资料两总体均数差别较B资料大
B、B资料两总体均数差别较A资料大
C、做推断两总体均数有差别时，A资料较B资料犯错误概率更大
D、A资料更有理由推断两总体均数有差别
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''>统计学中的小概率事件，下面说法正确的是</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、反复多次观察，绝对不发生的事件
B、在一次观察中，可以认为不会发生的事件
C、发生概率小于0.1的事件
D、发生概率小于0.001的事件
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''>某项指标</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''>医学参考值范围表示的是</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、检测指标在此范围，判断"异常"正确的概率大于或等于95%
B、&#61472;检测指标在此范围，判断"正常"正确的概率大于或等于95%
C、在"异常"总体中有95%的人在此范围之外
D、&#61472;在"正常"总体中有95%的人在此范围
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''>比较两种药物疗效时，对于下列哪项可作单侧检验</span><span
  lang=EN-US style='font-size:10.5pt'>(    )<o:p></o:p></span></p>
  
A、已知A药与B药均有效
B、不知A药好还是B药好
C、已知A药不会优于B药
D、不知A药与B药是否均有效
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''>描述偏态分布资料特征的是</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、中位数、四分位间距
B、均数、标准差
C、中位数、标准差
D、几何均数、全距
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
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>两组数据中每个变量值减同一常数后做两个均数差别的假设检验（</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、t值不变
B、t值变小
C、t值变大
D、t值变小或变大
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''>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'>120</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、该市所有成年男子
C、该市所有健康成年男子
D、120名该市成年男子
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''>线性回归中，当决定系数有统计学意义时，其值越大，回归方程的拟合效果越佳。</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''>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''>反映一组等比资料集中趋势的指标，宜用几何均数。</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''>某医院某日门诊病人数</span><span lang=EN-US
  style='font-size:10.5pt'>1000</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>人，其中内科病人</span><span
  lang=EN-US style='font-size:10.5pt'>400</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>人，求得</span><span lang=EN-US style='font-size:10.5pt'>40%</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>，这</span><span lang=EN-US
  style='font-size:10.5pt'>40%</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>是绝对数</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''>偏回归系数表示在除</span><span lang=EN-US
  style='font-size:10.5pt'>Xi</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>以外的自变量固定不变的条件下，</span><span
  lang=EN-US style='font-size:10.5pt'>Xi</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>每改变一个单位的平均变化。</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''>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
  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
  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''>分布、</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''>分布、</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''>分布和正态分布各有几个参数</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、1，1，1，1
B、2，2，2，2
C、2，1，1，2
D、1，2，2，1
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''>最小组段无下限或最大组段无上限的频数分布资料，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''>）描述其集中趋势。</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、均数
B、标准差
C、中位数
D、四分位数间距
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''>高血压临床试验分为试验组和对照组，分析考虑治疗</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''>周、</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''>周、</span><span lang=EN-US
  style='font-size:10.5pt'>4</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>周、</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''>周、</span><span lang=EN-US style='font-size:10.5pt'>8</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>周血压的动态变化和改善情况，为了直观显示出两组血压平均变动情况，宜选用的统计图是</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、半对数图
B、线图
C、条图
D、直方图
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''>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''>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''>收集资料不可避免的误差是</span><span lang=EN-US
  style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、随机误差
B、系统误差
C、记录误差
D、仪器故障误差
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''>双盲法的主要目的</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、避免抽样误差
B、节省试验开支
C、避免人为主观因素的影响
D、科学实验
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''>在已知均数为μ，标准差为</span><span lang=EN-US
  style='font-size:10.5pt'>σ</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>的正态分布中随机抽样，</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/image002.gif'/>-</span><span style='font-size:10.5pt;font-family:宋体;
  mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>μ</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/image004.gif'/> </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''>）的概率为</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'><o:p></o:p></span></p>
  
A、1.96σ
B、1.96σ<img style='vertical-align:text-bottom' src='http://otsstatic.chinaedu.net/ots/lzu/quesimages/413/20150702171033/yxtjx/image005.gif'/>
C、t0.05/2,νS
D、t0.05/2,νS<img style='vertical-align:text-bottom' src='http://otsstatic.chinaedu.net/ots/lzu/quesimages/413/20150702171033/yxtjx/image005.gif'/>
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''>应用百分位数法估计参考值范围的条件是</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、数据服从正态分布
B、&#61472;数据服从偏态分布
C、有大样本数据
D、数据服从对称分布
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''>对相关系数的显著性检验，无效假设</span><span
  lang=EN-US style='font-size:10.5pt'>H0</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>是</span><span lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、H0:r=0
B、H0:ρ=0
C、H0:b=0
D、H0:β=0
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''>用触诊和</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''>摄片对</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''>名妇女做乳癌检查，触诊有</span><span lang=EN-US style='font-size:10.5pt'>40</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>名阳性，</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''>摄片有</span><span
  lang=EN-US style='font-size:10.5pt'>70</span><span style='font-size:10.5pt;
  font-family:宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:
  'Cambria Math''>名阴性，两种方法均阳性者</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''>名，两种方法检查均为阴性的人数是</span><span
  lang=EN-US style='font-size:10.5pt'><span
  style='mso-spacerun:yes'>         
  </span><o:p></o:p></span></p>
  
A、20
B、30
C、40
D、10
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''>对于近似正态分布的资料，描述其变异程度应选用的指标是</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
A、变异系数
B、&#61472;离均差平方和
C、四分位数间距
D、&#61472;标准差
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''>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''>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''>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
  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:


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''>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''>检验差别有统计学意义，</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，</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''>越有理由认为两样本均数差别越大。</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''>拒绝</span><span lang=EN-US
  style='font-size:10.5pt'>H0</span><span style='font-size:10.5pt;font-family:
  宋体;mso-ascii-font-family:'Cambria Math';mso-hansi-font-family:'Cambria Math''>时，</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''>值越小越好，接受</span><span lang=EN-US style='font-size:10.5pt'>H0</span><span
  style='font-size:10.5pt;font-family:宋体;mso-ascii-font-family:'Cambria Math';
  mso-hansi-font-family:'Cambria Math''>时，</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''>值越大越好。</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''>同一资料的标准误一定小于标准差。</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''>假设检验的检验水准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''>，也是表示统计检验允许犯假阳性错误的概率为</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''>。</span><span
  lang=EN-US style='font-size:10.5pt'><o:p></o:p></span></p>
  
√、对
×、错
正确资料: