THE SIZE DISTRIBUTION OF URBAN AREAS - TESTING FOR THE APPROPRIATENESS OF THE PARETO DISTRIBUTION USING A GENERALIZED BOX-COX TRANSFORMATION FUNCTION

A widely held opinion among urban economists and geographers is that the Pareto distribution is an accurate representation of the urban size distribution of many countries around the world. This paper focuses attention on the appropriateness of the procedures used in the literature in arriving at this conclusion. We employed the generalized Box-Cox transformation function, which permits estimation of many functional forms for testing the Pareto distribution as special cases. The results obtained are illuminating albeit somewhat surprising. Except for one country the Pareto distribution is overwhelmingly rejected in favor of the general Box-Cox function. In more than 30 percent of all countries this form collapses to a reciprocal function. Moreover, as far as the overall goodness of fit is concerned, our results show that the General Box-Cox function is superior to the Pareto form.