第二章统计描述的 Stata实现本章主要用到的 Stata主要命令 * 描述性统计：summary 变量名[weight＝],detail 频数表 : tabulate变量名 [weight＝] 计算均数：means变量名 [weight＝] 频数分布图：histogram变量名 ,bin() start() *Stata 的命令可以用前几个字母代替，如summary 可以由 su 代替， tabulate可以由 tab代替。下面就直接用缩写，不再赘述。例 2-1 某市 1982 年调查 120 名 20 岁男子的身高（ cm）资料如下，试编制频数表和频数图。164.4169.2174.7175.0165.0162.8170.2160.1170.9170.1175.5170.3172.3168.2166.7171.7166.8171.6165.2172.0171.7168.8171.8174.5171.7172.7166.3174.0169.0174.5171.8174.9180.0173.5178.1169.7176.1181.3173.8164.7172.2172.8178.6172.0182.5172.0173.5166.3176.1169.2176.4168.4171.0169.1166.9181.1170.4165.2168.0172.4164.3166.9176.4164.2177.2168.3177.8173.0167.4173.2169.9 172.1 170.4 174.8 172.1 164.4 170.5 165.0172.8166.8175.8 171.1 174.8 172.7 169.4 178.2 174.1 177.2170.0 172.7 168.3 177.1 172.5 166.3 175.1 174.4 162.3 171.3177.0 163.5 168.8 177.6 175.2 171.5 172.5 179.1 172.6 184.8168.3 182.8 170.3 167.5 171.2 170.4 166.9 178.5 164.1 169.5 173.4 170.3 数据格式如下：x 1 164.4 2 175.5 3 171.7 4 171.8 5 172.2 6 176.4 7 164.3 8 169.9 9 175.8 10 168.3 11 168.8 12 170.3 13 169.2 14 170.3 15 168.8 16 174.9 17 172.8 18 168.4 19 166.9 20 172.1 21 171.1 22 177.1 23 177.6 24 167.5 25 174.7 26 172.3 27 171.8 28 180 29 178.6 30 171 31 176.4 32 170.4 33 174.8 34 172.5 35 175.2 36 171.2 37 175 38 168.2 39 174.5 40 173.5 41 172 42 169.1 43 164.2 44 174.8 45 172.7 46 166.3 47 171.5 48 170.4 49 165 50 166.7 51 171.7 52 178.1 53 182.5 54 166.9 55 177.2 56 172.1 57 169.4 58 175.1 59 172.5 60 166.9 61 162.8 62 171.7 63 172.7 64 169.7 65 172 66 181.1 67 168.3 68 164.4 69 178.2 70 174.4 71 179.1 72 178.5 73 170.2 74 166.8 75 166.3 76 176.1 77 173.5 78 170.4 79 177.8 80...
