stata12笔记

stata12 笔记 哲学笔记pdf明清笔记pdf政法笔记下载课堂笔记下载生物化学笔记PDF 1， 单因素方差分析 oneway sales color,tabulate | Summary of 销售量 颜色 | Mean Std. Dev. Freq. ------------+------------------------------------ 1 | 27.32 1.6346255 5 2 | 29.56 1.4638992 5 3 | 26.44 1.8160393 5 4 | 31.46 1.2876336 5 ------------+------------------------------------ Total | 28.695 2.4701321 20 Analysis of Variance Source SS df MS F Prob > F ------------------------------------------------------------------------ Between groups 76.8454953 3 25.6151651 10.49 0.0005 Within groups 39.0840006 16 2.44275004 ------------------------------------------------------------------------ Total 115.929496 19 6.10155242 Bartlett's test for equal variances: chi2(3) = 0.4656 Prob>chi2 = 0.926 查看数据信息:des . Contains data from C:\Documents and Settings\Administrator\桌面\软件学习\Stata统计分析与 应用视频教程B\操作数据\教程数据\chap06\nerlove.dta obs: 145 vars: 13 9 Oct 2008 18:53 size: 6,960 ---------------------------------------------------------------------------------------------------------------------- ----------------------- storage display value variable name type format label variable label ---------------------------------------------------------------------------------------------------------------------- ----------------------- tc float %9.0g TC q int %8.0g Q pl float %9.0g PL pf float %9.0g PF pk int %8.0g PK lntc float %9.0g lnq float %9.0g lnpl float %9.0g lnpf float %9.0g lnpk float %9.0g lntc_q_pf float %9.0g lnpl_pf float %9.0g lnpk_pf float %9.0g --------------------------------------------------------------------------------------------------------------------------------------------- Sorted by: (根据什么排序) 展示第一位到第三位的数据:list in 1/3 +------------------------------------------------------------------------------------------------------------------------+ | tc q pl pf pk lntc lnq lnpl lnpf lnpk lntc_q_pf lnpl_pf lnpk_pf | |------------------------------------------------------------------------------------------------------------------------| 1. | .082 2 2.1 17.9 183 -2.501036 .6931472 .7419373 2.884801 5.209486 -6.078984 -2.142863 2.324685 | 2. | .661 3 2.1 35.1 174 -.4140014 1.098612 .7419373 3.558201 5.159055 -5.070815 -2.816264 1.600854 | 3. | .99 4 2.1 35.1 171 -.0100503 1.386294 .7419373 3.558201 5.141664 -4.954546 -2.816264 1.583462 | +------------------------------------------------------------------------------------------------------------------------+ 查看数据的相关信息，均值，方差等: codebook tc pf TC --------------------------------------------------------------------------------------------------------------------------------------------- type: numeric (float) range: [.082,139.422] units: .001 unique values: 144 missing .: 0/145 mean: 12.9761 std. dev: 19.7946 percentiles: 10% 25% 50% 75% 90% .705 2.382 6.754 14.132 32.318 ---------------------------------------------------------------------------------------------------------------------- ----------------------- pf PF ---------------------------------------------------------------------------------------------------------------------- ----------------------- type: numeric (float) range: [10.3,42.8] units: .1 unique values: 38 missing .: 0/145 mean: 26.1766 std. dev: 7.87607 percentiles: 10% 25% 50% 75% 90% 12.9 21.3 26.9 32.2 35.1 分位数:小于12.9的数占10%。 显示比较两个变量的相关统计信息:sum tc pf Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- tc | 145 12.9761 19.79458 .082 139.422 pf | 145 26.17655 7.876071 10.3 42.8 显示q这个变量的详细信息:sum q,d Q ------------------------------------------------------------- Percentiles Smallest 1% 3 2 5% 13 3 10% 43 4 Obs 145 25% 279 4 Sum of Wgt. 145 50% 1109 Mean 2133.083 Largest Std. Dev. 2931.942 75% 2507 11477 90% 5819 11796 Variance 8596285 95% 8642 14359 Skewness 2.398202 99% 14359 16719 Kurtosis 9.474916 .显示变量q的更加细节的信息:tabu q Q | Freq.(出现次数) Percent (百分比) Cum.(累计百分比) ------------+----------------------------------- 2 | 1 0.69 0.69 3 | 1 0.69 1.38 4 | 2 1.38 2.76 5 | 1 0.69 3.45 9 | 1 0.69 4.14 11 | 1 0.69 4.83 13 | 2 1.38 6.21 22 | 1 0.69 6.90 25 | 2 1.38 8.28 35 | 1 0.69 8.97 39 | 1 0.69 9.66 展示某个变量的学校编号与地区编号:list snum dnum sales if sales>30 展示某个变量的学校编号与地区编号当地区编号为140时:list snum dnum sales if snum==140 +-------+ | sales | |-------| 6. | 31.2 | 8. | 30.8 | 16. | 30.8 | 18. | 32.4 | 19. | 31.7 | |-------| 20. | 32.8 | +-------+