Journal for Labour Market Research

Table 1 Estimates of Cobb-Douglas production functions under alternative determination of standard errors using hc1, hc3, bootstrap, jackknife and cluster-robust estimates

From: Estimation of standard errors and treatment effects in empirical economics—methods and applicationsSchätzung von Standardfehlern und Kausaleffekten in der empirischen Wirtschaftsforschung – Methoden und Anwendungen

	hc1	hc3	bootstrap	jackknife	cluster (idnum)
lnL	0.9472	0.9472	0.9472	0.9582	0.9472
lnL	(184.02)	(183.99)	(227.40)	(184.49)	(126.29)
lnK	0.2225	0.2225	0.2225	0.2178	0.2225
lnK	(60.80)	(60.79)	(60.40)	(59.58)	(43.04)
const	9.0810	9.0810	9.0810	9.0908	9.0810
const	(307.86)	(307.81)	(271.82)	(308.83)	(215.20)

Note: n=34,308; R ²=0.843; t-ratios in parentheses; idnum—identification number of the firm

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