A cost function is estimated using a time-series/cross-section database for the trucking industry covering the time period from 1953 through 1982 (i.e., after the implementation of the Motor Carrier Act of 1980, which essentially deregulated the industry). Two conclusions emerge. First,...

This paper considers a first-order autoregressive model which may include an intercept and trend where the innovations are independently and identically distributed. The innovation distribution is assumed unknown. The autoregressive parameter is tested using the conventional t statistic. The...

This article investigates the finite-sample performance of a modified Box-Pierce Q statistic (Q*) for testing that financial time series are uncorrelated without assuming statistical independence. The finite-sample rejection probabilities of the Q* test under the null and its power are examined...