## An Econometric Model of the Demand for Transportation |

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### Contents

REVIEW OF THE LITERATURE OH FREIGHT TRANSPORTATION | 6 |

THE TWOMARKET MULTIMODE TRANSPORTATION MODEL | 36 |

Figure Page | 37 |

9 other sections not shown

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### Common terms and phrases

ANALYSIS OF VARIANCE annual tonnage associated costs average revenue curve barge CM CM coefficient of determination COEFFICIENTS and final COEFFICIENTS Intercept Distance commodity classes commodity groups curve for Mode demand curve demand equations demand for transportation derived different from zero distance coefficient Distance Quantity Density dummy variable equilibrium estimating equations final standard errors function increase Intercept Distance Quantity Interstate Commerce Commission marginal cost modal split modes of transport monopolist negative o o o o o o Products of Forests Products of Mines profit maximizing Quantity Density Price quantity shipped quantity variable RAIL RATE REGRESSIONS rail transport rate equations RATE REGRESSIONS GROUP ratio Reduction due Remainder Reduction for Remainder region rt rt shipper SIMPLE CORRELATION COEFFICIENTS Source of Variance supply curve timated transport costs transport demand transport rate transportation industry transportation market transportation model two-market Variance D.F.
S.S. VARIANCE Source water shipments