在stata中面板数据有特别的前缀：XT 面板回归最基础命令是XTREG 你用的REG不是面板数据的回归分析，而且没有观测值 所以提示no observations r(2000)回归时是忽略缺失值的，你的这几个变量的组合可能全都是缺失值，所以显示了这个东东这是什么东东啊
固定效应xtreg ltvfo ltlan ltwlab ltpow ltfer hrs mci ngca, fe estimates store FE xtreg ltvfo ltlan ltwlab ltpow ltfer hrs mci ngca i.year, fe r **注:i.year表示时间固定效应;r表示聚类稳健标准误,等同于vce(cluster id) ***LSDV法(最小二乘虚拟变量模型) reg ltvfo ltlan ltwlab ltpow...
Stata处理面板数据最核心的命令是xtreg，基本语法为：xtreg因变量自变量,模型类型选项 模型类型主要包括固定效应（fe）、随机效应（re）、混合回归（ols）三种。固定效应模型用fe选项，适合处理个体效应与解释变量相关的情况，例如研究不同企业的创新投入对产出的影响时，企业特有因素可能直接影响投入和产出。随机效应模型用...
xtreg n L.n L2.n w L.w k L.k L2.k ys L.ys L2.ys yr*,fe Fixed-effects (within) regression Number of obs = 751 Group variable: id Number of groups = 140 R-sq: Obs per group: within = 0.7973 min = 5 between = 0.9808 avg = 5.4 overall = 0.9758 max = 7 F(15,596) ...
no log, trace, tolerance(#), ltolerance(#), from(init specs); see [R] maximize. These options are seldom used. The following option is available with xtreg but is not shown in the dialog box: coeflegend; see [R] estimation options. Options for PA model £ £ Model noconstant...
xtreg, be reports the “number of observations” and group-size information: describe in [XT] xt showed that we have 28,534 “observations” — person-years, really — of data. If we take the subsample that has no missing values in ln wage, grade, . . . , south leaves us with 28...
如果出现的是no observations,那么需要:1.egen t =group(截至日期) 2.xtset id t 3.正常xtreg即可完成滞后。方法来源为:http://www.javashuo.com/article/p-qzbbzqbn-nv.html 2022-03-14 15:44280回复 鼓手没有感情我自己猜测是因为时间序列的格式不对所导致的问题,在视频中up的时间格式是对的,但是给的...
stata操作命令-xtreg.pdf,Title xtreg — Fixed-, between-, and random-effects, and population-averaged linear models Syntax GLS random-effects (RE) model depvar indepvars if in RE options Between-effects (BE) model depvar indepvars if in BE options Fixed-e
**# 6、最新命令eventdd,method选择为"xtreg" eventdd asmrs pcinc asmrh cases i.year, /// timevar(rel_time) method(fe, cluster(stfips)) /// noline graph_op( /// xlabel(-20(5)25, nogrid) /// xline(0, lpattern(dash) lcolor(gs12) lwidth(thin)) /// ...
tests of nonlinear hypotheses See the corresponding entries in the Base Reference Manual for details.Special-interest postestimation commands estat wcorrelation displays the estimated matrix of the within-group correlations.Syntax for predict predict type newvar if in ,statistic nooffset 1 ...