green | R Documentation |
The dataset consists of 123 American electric utility companies. As in the set-up of Gijbels et al. (1999),
we used the measurements of the variables y_i = \log(q_i)
and
x_i = \log(c_i)
, where q_i
is the production output
of the company i
and c_i
is the total cost involved in the production.
For a detailed description and analysis of these data see, e.g., Christensen and Greene (1976) and Greene (1990).
data(green)
A data frame with 123 observations on the following 2 variables.
COST
a numeric vector.
OUTPUT
a numeric vector.
Gijbels et al. (1999).
Christensen, L.R. and Greene, W.H. (1976). Economies of Scale in U.S. Electric Power Generation, Journal of Political Economy, University of Chicago Press, 84, 655-76.
Gijbels, I., Mammen, E., Park, B.U. and Simar, L. (1999). On estimation of monotone and concave frontier functions. Journal of American Statistical Association, 94, 220-228.
Greene, W.H. (1990). A Gamma-distributed stochastic frontier model, Journal of Econometrics, 46, 141-163.
data("green")
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