In this paper we extend the large-sample results provided for the augmented Dickey—Fuller test by Said and Dickey (1984, Biometrika 71, 599—607) and Chang and Park (2002, Econometric Reviews 21, ...

This paper tests the validity of Purchasing Power Parity (PPP) doctrine for Ghana using the conventional relative PPP equation. We conducted a univariate Augmented Dickey-Fuller unit root test on the ...