Stata基本操作和数据分析入门：第二讲 统计描述入门.doc

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1、Stata软件基本操作和数据分析入门第二讲统计描述入门赵耐青一、调查某市1998年110名19岁男性青年的身高（cm）资料如下，计算均数、标准差、中位数、百分位数和频数表。173.1167.8173.9176.9173.8171.5175.1175.2176.7174.5169.2174.7185.4175.8173.5175.9175.9173.2174.8177.2171.9166.0177.3175.2179.8175.7180.8171.4178.9172.6166.9170.8168.7175.0183.7171.6172.9173.6177.7172.4181

2、.2178.1173.3177.5173.0174.3174.5172.5171.3174.0177.9170.7175.2178.5177.6183.3173.1170.9180.5176.8179.6180.6176.6174.3168.7175.2179.5172.5173.0174.2169.5177.0183.6170.3178.8181.1182.9177.8164.1169.1176.3169.4171.1172.9177.0179.8178.2174.4169.2176.4178.3165.0175.8181.0177.6177.4178.7175.118

3、1.8171.3174.8181.7177.3178.5179.3177.0175.8181.8177.5180.2Stata数据结构x1173.12169.23171.94166.95181.26177.97179.68169.59176.310178.311174.812167.813174.71416615170.816178.117170.718180.61917720169.42116522181.723173.924185.425177.326168.727173.328175.229176.630183.631171.132175.833177.334176

4、.935175.836175.23717538177.539178.540174.341170.342172.94318144178.545173.846173.547179.848183.74917350177.651168.752178.85317754177.655179.356171.557175.958175.759171.660174.361183.362175.263181.164179.865177.46617767175.168175.969180.870172.971174.572173.173179.574182.975178.276178.7771

5、75.878175.279173.280171.481173.682172.583170.984172.585177.886174.487175.188181.889176.790174.891178.992177.793171.394180.59517396164.197169.298181.899177.5100174.5101177.2102172.6103172.4104174105176.8106174.2107169.1108176.4109171.3110180.2(读者可以把数据直接粘贴到Stata的Edit窗口)在介绍统计分析命令之前，先介绍打开一个保存

6、统计分析结果的文件操作：点击log图标，然后选择路径和输入保存结果的文件名，建议选择扩展名为log的文件，这样以后统计分析结果都将保存在这个文件中并且可以用word打开和编辑。当分析结束时，仍点击该图标，关闭文件。计算样本的均数、标准差、最大值和最小值命令1：su变量名(可以多个变量：即：su变量名1变量名2…变量名m)命令2：su变量名,d(可以多个变量:即：su变量名1变量名2…变量名m,d)本例命令sux变量样本量均数标准差最小值最大值Variable

7、ObsMeanStd.Dev.MinMax-------------+----------------------

8、-------------------------------x

9、110175.36554.222297164.1185.4本例命令.sux,dx-------------------------------------------------------------PercentilesSmallest1%165164.15%168.716510%169.45166Obs11025%172.9166.9SumofWgt.11050%175.2Mean175.3655LargestStd.Dev.4.22229775%178.