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时间:2018-07-15
《2015广州中医药大学博士班多元统计与软件应用医学统计学法实习题》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、多元统计与软件应用医学统计方法实习题《医学统计学》第三版(博士研究生班用)广州中医药大学预防医学教研室医学统计学教研室二〇二一年九月请博士生使用统计软件之一(STATA、SPSS、SAS)完成作业。要求将计算结果文件存盘,文件名是博士生的姓名+学号。参考答案详见教材。在练习题号下粘入用软件计算的结果并对进行简单的分析,做出统计结论。练习完成后请在考试后一周以内电邮至主讲教授邮箱,以便计算成绩。电邮地址profmo2013@163.com或profmo@aliyun.com在练习题号下粘入用软件计算的结果并对进行简单的分析,做出统计结论实习题答题方法
2、演示实例某地抽查了360名男性红细胞计数,均数为4.66×1012/L,标准差为0.5746×1012/L,同时抽查了255名女性红细胞数,均数为4.18×1012/L,标准差为0.2910×1012/L。问∶此地男、女红细胞计数的总体均数之间有无显著性的差别?答:t=12.2696,P=0.0000,故可认为此地男、女红细胞计数的总体均数之间差异有统计学意义,男性红细胞计数比女红细胞计数高。所用stata程序及计算过程如下:.ttesti2554.180.2913604.660.5746Two-samplettestwithequalvarian
3、ces------------------------------------------------------------------------------
4、ObsMeanStd.Err.Std.Dev.[95%Conf.Interval]---------+--------------------------------------------------------------------x
5、2554.18.0182231.2914.1441124.215888y
6、3604.66.0302841.57464.6004444.719556-
7、--------+--------------------------------------------------------------------combined
8、6154.460976.0214926.53299854.4187684.503183---------+--------------------------------------------------------------------diff
9、-.48.0391209-.5568273-.4031727-----------------------------------
10、-------------------------------------------diff=mean(x)-mean(y)t=-12.2696Ho:diff=0degreesoffreedom=613Ha:diff<0Ha:diff!=0Ha:diff>0Pr(T11、T12、>13、t14、)=0.0000Pr(T>t)=1.0000例2-1某医院用随机抽样方法检查了138名成年女子的红细胞数,其测量结果如下,试编制频数分布表。3.964.234.423.595.124.024.323.724.764.164.614.263.77415、.204.363.074.893.974.283.644.664.044.554.254.633.914.413.525.034.014.304.194.754.144.574.264.563.793.894.214.953.984.293.674.694.124.564.264.664.283.834.205.244.024.333.764.814.173.963.274.614.263.964.233.764.014.293.673.394.124.273.614.984.243.834.203.714.034.344.693.624.184.16、264.365.284.214.424.363.664.024.314.833.593.973.964.495.114.204.364.543.723.974.284.763.214.044.564.254.924.234.473.605.234.024.324.684.763.694.614.263.894.214.363.425.014.014.293.684.714.134.574.264.035.464.163.644.163.76例2-1答:所用stata程序及计算过程如下:.use"C:UsersAdministratorDesk17、top博士统计学复习与作业2015(dta例02-01.dta",clear.sumRBCVariable18、ObsM
11、T
12、>
13、t
14、)=0.0000Pr(T>t)=1.0000例2-1某医院用随机抽样方法检查了138名成年女子的红细胞数,其测量结果如下,试编制频数分布表。3.964.234.423.595.124.024.323.724.764.164.614.263.774
15、.204.363.074.893.974.283.644.664.044.554.254.633.914.413.525.034.014.304.194.754.144.574.264.563.793.894.214.953.984.293.674.694.124.564.264.664.283.834.205.244.024.333.764.814.173.963.274.614.263.964.233.764.014.293.673.394.124.273.614.984.243.834.203.714.034.344.693.624.184.
16、264.365.284.214.424.363.664.024.314.833.593.973.964.495.114.204.364.543.723.974.284.763.214.044.564.254.924.234.473.605.234.024.324.684.763.694.614.263.894.214.363.425.014.014.293.684.714.134.574.264.035.464.163.644.163.76例2-1答:所用stata程序及计算过程如下:.use"C:UsersAdministratorDesk
17、top博士统计学复习与作业2015(dta例02-01.dta",clear.sumRBCVariable
18、ObsM
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