Chinese railway system
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An empirical study of scale economies in the Chinese Railway System Although results are not presented here, I have estimated several additional specifications of the basic empirical test. The absence of a positive choice effect does not seem to derive from the particular weighting of the data used hereone might prefer to weight MSAs equally, or by the number of SAT-takers, rather than by their high-school-age populationsnor from the inclusion in the sample of schools with too few SAT-takers to permit accurate estimation of the school mean...
125p mualan_mualan 25-02-2013 42 7 Download