医学统计学总复习练习题含答案

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1、living standards, poor farmers in less than complete elimination of 4600 Yuan, 8949, 19008. Five waters rule: the County invested 2.169 billion yuan, similar counties line the citys first complete the 42 km of sewage pipe network construction, completion rate ranked first in the city, won the provin

2、cial rural sewage treatment work better; key pollution sources such as electroplating, papermaking, chemical industry management through verification and acceptance of the municipal government, the County removed Black and odorous River, River waste, beginning of river ecological restoration effects

3、. Three modified a split aspects: County total demolition illegal area up 2.759 million square meters, completed City issued annual task of 153%, split against area ranking city second; completed three modified area 4.846 million square meters, completed City issued annual task of 403%, ranking city

4、 third, which village in the a target completed total city ranking first; County Government was named city level three modified a split work advanced. These achievements are hard won and should be appreciated. However, we are fully aware, the new period, and work in the countryside and the environme

5、nt facing higher standards and requirements, provincial party Committee offered to high level build a comprehensive well-off society goal requires no filth, dirty environment illegal buildings, into a well-off; municipal party Committee also proposes to build into the well-off benchmark goals of the

6、 city. Compared with the superior claim, South Gate of XX beautiful goal, my County San Nong and environment there are a number of weaknesses and gaps, highlighted in the following five aspects: first, agriculture remained low pattern. Low is reflected in the quality and low; short, value added of t

7、he industry chain is low; 123 fusion yield low employee age, low quality. Small is reflected in smaller, specialized cooperatives throughout the County there were 3,396, but on the scale of too little. San is reflected in production, management, services, decentralized, centralized, standardized, br

8、and, information and organizational level is not high. Second, the countryside is still in dirty phase. Dirty is dirty of rural sanitation situation has not changed. Chaos is a village in rural housing construction planning, construction of disorder, no drawings, no construction, no vetting four no

9、phenomenon, heap lying there. Bad is the weak rural base, village governance is poor. Thirdly, farmers continued to be persistent look. Old is aging, rural labor force accounted for 70% over the age of 50. Big is that the reform measures ground resistance, such as the transactions of property rights

10、, land replacement; public service supply gap, rural education, health care, pensions and other services can not meet the demand still difficult for poverty alleviation, with emphasis on poverty alleviation and 191. Hard is a peasants, peasants. Four water effects still lacks一、最佳选择题1卫生统计工作的步骤为 C A.统

11、计研究调查、搜集资料、整理资料、分析资料 B.统计资料收集、整理资料、统计描述、统计推断 C.统计研究设计、搜集资料、整理资料、分析资料 D.统计研究调查、统计描述、统计推断、统计图表 E.统计研究设计、统计描述、统计推断、统计图表2统计分析的主要内容有 D A.统计描述和统计学检验 B.区间估计与假设检验 C.统计图表和统计报告 D.统计描述和统计推断 E.统计描述和统计图表3统计资料的类型包括 E A.频数分布资料和等级分类资料 B.多项分类资料和二项分类资料 C.正态分布资料和频数分布资料 D.数值变量资料和等级资料 E.数值变量资料和分类变量资料4抽样误差是指 BA.不同样本指标之间的

12、差别 B.样本指标与总体指标之间由于抽样产生的差别C.样本中每个体之间的差别 D.由于抽样产生的观测值之间的差别 E.测量误差与过失误差的总称5.统计学中所说的总体是指 B A.任意想象的研究对象的全体 B.根据研究目的确定的研究对象的全体 C.根据地区划分的研究对象的全体 D.根据时间划分的研究对象的全体 E.根据人群划分的研究对象的全体6描述一组偏态分布资料的变异度,宜用 D A.全距 B.标准差 C.变异系数 D.四分位数间距 E.方差7用均数与标准差可全面描述其资料分布特点的是 C A.正偏态分布 B.负偏态分布 C.正态分布和近似正态分布 D.对称分布 E.任何分布8比较身高和体重两

13、组数据变异度大小宜采用 A A.变异系数 B.方差 C.极差 D.标准差 E.四分位数间距9频数分布的两个重要特征是 C A.统计量与参数 B.样本均数与总体均数 C.集中趋势与离散趋势 D.样本标准差与总体标准差 E.样本与总体10正态分布的特点有 B A.算术均数=几何均数 B.算术均数=中位数 C.几何均数=中位数 D.算术均数=几何均数=中位数 E.以上都没有11正态分布曲线下右侧5对应的分位点为 D A.+1.96 B.-1.96 C.+2.58 D.+1.64 E.-2.5812下列哪个变量为标准正态变量 D A. B. C. D. E. 13某种人群(如成年男子)的某个生理指标(

14、如收缩压)或生化指标(如血糖水平)的正常值范围一般指 C A.该指标在所有人中的波动范围 B.该指标在所有正常人中的波动范围 C.该指标在绝大部分正常人中的波动范围 D.该指标在少部分正常人中的波动范围 E.该指标在一个人不同时间的波动范围14下列哪一变量服从t分布e A. B. C. D. E. 15.统计推断的主要内容为 B A.统计描述与统计图表 B.参数估计和假设检验 C.区间估计和点估计 D.统计预测与统计控制 E.参数估计与统计预测16可信区间估计的可信度是指 B A. B.1- C. D.1- E.估计误差的自由度17下面哪一指标较小时可说明用样本均数估计总体均数的可靠性大C A.变异系数 B.标准差 C.标准误 D.极差 E.四分位数间距18两样本比较作t检验,差别有显著性时,P值越小说明 C A.两样本均数差别越大 B.两总体均数差别越大 C.越有理由认为两总体均数不同 D.越有理由认为两样本均数不同 E. I型

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