实验课程三-简单随机抽样(二).doc

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1、实验（实训）报告项目名称简单随机抽样(二)所属课程名称抽样调查项目类型操作性实验实验(实训)日期2012年月日班级10统计1班学号姓名指导教师实验名称:简单随机抽样(二)实验目的:演示简单随机抽样方法(无放回)得到的的置信区间实验要求:编写R程序，实现：(1)产生200个均值15，标准差2的正态随机数；(2)用简单随机抽样方法(无放回)，抽取一个样本容量为10的样本；(3)抽样如2所述样本100个；(4)计算100个样本中每个样本的样本均值,样本标准差；(5)根据每个样本，计算总体均值的置信水平为95%的置信区间；(6)在平面直角坐标系中，画出100个置信区间

2、；(7)计算100个置信区间的置信概率。实验过程:(1)N<-rnorm(200,15,2)NN<-rnorm(200,15,2)>N[1]16.5461416.4745916.6041913.9831714.0036517.0780315.8737610.22596[9]15.4156014.5075516.5637612.6728515.3735614.7941019.0915813.87803[17]18.1419614.5880516.1713116.1894017.2115114.6224813.6999312.18729[25]16.5297515

3、.0235213.7547616.1169314.6223619.3225313.6024713.56651[33]16.6078712.1661112.3050216.7655114.0800516.2481615.1610714.59102[41]15.0137613.3998314.0042218.9153115.7871314.9985515.8146715.05878[49]12.8714513.8779011.6098314.7962113.7835816.4637914.7805614.42493[57]14.2782713.8113013.76

4、90813.5167514.6629314.5199416.5636313.34385[65]12.8935717.9947314.2014113.1942512.6661912.4396215.1466313.83010[73]17.3081617.7086917.2463414.2903014.4708913.7568918.1834915.08530[81]12.4524115.2513316.1804816.6238114.7475217.8118814.4778018.56328[89]14.9624816.4493617.9360216.93349

5、11.2469811.8360016.8078616.06975[97]18.4319715.3184614.7647418.1326415.3902915.5557117.6224914.65648[105]15.9342114.2143016.1499616.1599113.5994514.5345314.9552113.83019[113]10.0121515.5345018.0409416.0100618.5683212.0401114.3990512.29974[121]18.5784216.2273814.3419511.2993318.17072

6、11.3464714.0285616.47862[129]13.1842415.1106713.9494914.8188411.2483315.4297012.1183412.51848[137]11.3194911.8800213.6878417.6997018.9314117.8828714.8885512.46922[145]12.3321214.7944017.8870015.1862018.8651410.6222614.8685410.42686[153]18.7215718.2813315.5818818.1334916.0714018.1736

7、016.4524214.70793[161]14.3083512.3513614.6546713.7404512.9797012.8172214.6696815.03169[169]13.7078916.3740814.7083016.6796715.5703713.5684116.2238619.64459[177]18.8096413.6918415.9950715.7736817.0977317.0493615.8188014.57061[185]10.0905316.8631113.2888613.4442812.7182614.4944012.635

8、2915.86269[193]13.4