Dataset: passenger1.dat Source: J. Johnston (1956), "Scale, Costs, and Profitability in Road Passenger Transport," The Journal of Industrial Economics Vol 4, pp207-223. Description: Cross-sectional analysis of 24 British bus companies (1951). Variables/Columns: Expenses per car mile (pence) 9-13 Car miles per year (1000s) 19-23 Percent of Double Deckers in fleet 28-32 Percent of fleet on fuel oil 38-42 Receipts per car mile (pence) 49-53