E. G. Tsionas, "Stochastic Frontier Models with Random Coefficients", Journal of Applied Econometrics, Vol. 17, No. 2, 2002, pp. 127-147. The file tsiongas.dat contains data for cost function estimation of 123 US electric utilities in 1970. The data were collected by Christensen, LR, and Greene, WH (1976). "Economies of scale in U.S. electric power generation", Journal of Political Economy 84: 655-676. The data are listed in the Appendix to Greene, WH (1990). "A gamma-distributed stochastic frontier model", Journal of Econometrics 46: 141-163. Column 1: Firm identification (not used) Column 2: Cost Column 3: Quantity Column 4: Price of labor Column 5: Price of Capital Column 6: Price of Fuel Mike G. Tsionas Department of Economics Athens University of Economics and Business 76 Patission Street, 104 34 Athens, Greece Tel. (++301) 8203 392, Fax: (++301) 823 8249 & 820 3301