systemfit (version 0.8-5)

GrunfeldTheil: Grunfeld Data as published in Theil (1971)

Description

Panel data on 2 US firms for the years 1935-1954.

Usage

data("GrunfeldTheil")

source

Theil (1971), p. 296.

References

Grunfeld, Y. (1958). The Determinants of Corporate Investment, Unpublished Ph.D. Dissertation, University of Chicago.

Theil, Henri (1971). Principles of Econometrics, John Wiley & Sons, New York.

Examples

## Repeating the OLS and SUR estimations in Theil (1971, pp. 295, 300)
data( "GrunfeldTheil" )
formulaGrunfeld <- invest ~ value + capital
# OLS
theilOls <- systemfitClassic( "OLS", formulaGrunfeld, "firm", "year",
   data = GrunfeldTheil )
summary( theilOls )
# SUR
theilSur <- systemfitClassic( "SUR", formulaGrunfeld, "firm", "year",
   data = GrunfeldTheil, rcovformula = 0 )
summary( theilSur )