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The study investigated the effect of exchange rate on economic growth in Nigeria using annual time series data from 1970 to 2021. The data were obtained from Statistical Bulletin published by the Central Bank of Nigeria 2021. The empirical studies reviewed had divergent views on the impact of exchange rate on economic growth in Nigeria. The study began with the test of unit root using Augmented Dickey-Fuller (ADF) and Philip-Peron (PP) unit root tests, followed by Johansen cointegration test, vector error correction model (VECM). The VECM indicated that exchange rate appreciation contracts output. The granger causality tests revealed that exchange rate and economic growth reinforce one another. However, based on these findings, it becomes imperative to build adequate foreign reserve to cushion-off trade shocks, promote import substitute industries, diversification of economy and enhance export oriented industries and reduction in cost of borrowing to enable domestic firms to benefit from the theoretical advantages of exchange rate variation. These measures promote the performances of macroeconomic variables in Nigeria.
Eze et al. (Thu,) studied this question.