The accuracy of the U.S. Bureau of Economic Analysis (BEA) monthly estimates of the nation’s quarterly nominal and real gross domestic product (GDP) growth rates are examined using a novel analytical framework based on the flexible two-piece generalized distribution. An analysis of the...

This paper models index stock returns for four major European stock markets as conditionally heteroskedastic processes with time dependent serial correlation. The evidence suggests that current returns in these markets are nonlinearly dependent on their past history. The dependence is strong...

In this paper we model six major foreign stock index returns as conditionally heteroscedastic processes with time dependent autocorrelation. The findings point to a significant inverse relationship between volatility and autocorrelation. This is in agreement with previous findings for the US...