Number of clusters (yico) = 396 Root MSE = 8.0157 (Std. err. adjusted for 396 clusters in yico) --- | Robust tpsub | Coefficient std. err. t P>|t| [95% conf. interval] ---+--- did | 1.211808 .5018251 2.41 0.016 .2252256 2.19839 asset ...
Number of clusters (provid) = 28 Number of obs = 274 F( 34, 27) = 0.34 Prob > F = 0.9984 Total (centered) SS = 3.805186838 Centered R2 = 0.7874 Total (uncentered) SS = 1282.736705 Uncentered R2 = 0.9994 Residual SS = .8089841945 Root MSE = .05434 --- | Robust lneduyear | Coe...
ivreg2 lneduyear (lnjinshipop=bprvdist) lnnightlight lncoastdist tri suitability lnpopdensity urbanrates i.provid , first cluster(provid) 第一阶段回归结果First-stage regression of lnjinshipop: Statistics robust to heteroskedasticity and clustering on provid Number of obs = 274 Number of clusters (...
Absorbing 2 HDFE groups F( 14, 228) = 3.63 Statistics robust to heteroskedasticity Prob > F = 0.0000 R-squared = 0.4485 Adj R-squared = 0.3790 Within R-sq. = 0.1296 Number of clusters (id) = 229 Root MSE = 1.9980 (Std. Err. adjusted for 229 clusters in id) --- | Robust innova...
HDFE Linear regression Number of obs = 8,250Absorbing 2 HDFE groups F( 19, 508) = 27.30Statistics robust to heteroskedasticity Prob > F = 0.0000 R-squared = 0.9999 Adj R-squared = 0.9998 Within R-sq. = 0.0658Number of clusters (unit_stack) = 509 Root MSE = 1.0677 (Std. err. ...
Number of obs = 274 No. of clusters = 28 F( 7, 239) = 85.27 Prob > F = 0.0000 R-squared = 0.6487 Adj R-squared = 0.5988 Root MSE = 0.4442 --- | Robust lnjinshipop | Coef. Std. Err. t P>|t| [95% Conf. Interval] ---+---...
delta: 1 unit . xtreg ltvfo ltlan ltwlab ltpow ltfer hrs mci ngca i.year, fe vce(cluster province)Fixed-effects (within) regression Number of obs = 476 Group variable: province Number of groups = 28 R-sq: Obs per group:within = 0.8932 min = 17 ...
HDFE Linear regression Number of obs = 8,250 Absorbing 2 HDFE groups F( 19, 508) = 27.30 Statistics robust to heteroskedasticity Prob > F = 0.0000 R-squared = 0.9999 Adj R-squared = 0.9998 Within R-sq. = 0.0658 Number of clusters (unit_stack) = 509 Root MSE = 1.0677 (Std. err....
on provid Number of clusters (provid) = 28 Number of obs = 274 F( ...
1.工具变量与内生自变量相关：即工具变量与自变量之间存在相关性，但是工具变量与误差项之间不存在相关性...