In late 2002, the Board of Governors of the Federal Reserve System published a revision to its index of industrial production and the related measures of capacity utilization. The primary feature of the revision was the reclassification back to 1972 of production and capacity indexes for...

We discuss the robust estimation of a linear trend if the noise follows an autoregressive process of first order. We find the ordinary repeated median to perform well except for negative correlations. In this case it can be improved by a Prais-Winsten transformation using a robust...