In this study, a new exponential ratio-regression estimator is developed using an aux- iliary variable for estimating the finite population mean under a two-phase sampling system. The Bias and Mean Square Error (MSE) of the proposed estimator are de- rived and compared with some of the...

This study examines the information flow between inflation and inflation uncertainty (IU) and intrastate inflationary trend among some ECOWAS member states. IU is measured using GARCH models and stochastic volatility model (SV). Transfer en- tropy was adopted to quantify the extent of...

This study compares the performance of GARCH-Type models in modelling inflation volatility in Nigeria covering the period 1995M01 to 2016M10. In the paper, we provide two main innovations: (i) we analyze inflation rate of two pronounced consumer prices indices namely headline and core consumer...

This paper tests validity property of the indicators that measured local content policy (LCP) in Nigeria’s oil sector. Survey data were obtained for the test, using confirmatory factor analysis (CFA) method. The results obtained from a four-factor measurement model confirmed the LCP indicators...

In this study, we describe the problem of testing for the stability and persistence of the Phillips curve for Nigeria when there are nonstationarities in the marginal distribution of the regressors. We test for unknown break dates using the SupF, AvgF and ExpF approaches. After reviewing the...

This paper investigates the relationship between credit to agriculture and agricultural output in Nigeria by means of nonlinear autoregressive distributed lag (NARDL) model using a time series data from 1992Q1 to 2015Q4. Results show no evidence of asymmetry in the impact of credit to output...

This paper examines the volatility of banks equity weekly returns for six banks (coded B1 to B6) using GARCH models. Results reveal the presence of ARCH effect in B2 and B3 equity returns. In addition, the estimated models could not find evidence of leverage effect. On evaluating the estimated...

This study shows how the application of forecast combination improves the accuracy of forecasts of economic variables. Using data from January 2009 to December 2014 on the Nigerian inflation rate, and forecasts of currency in circulation (see Ikoku, (2014)) as examples, we find that by combining...

The poor economic performance and growth of ECOWAS economies have become so challenging and this has necessitated research and discussions. Experts have argued that the relationship between trade and economic growth in the ECOWAS region is unclear and the question of whether trade promotes...

This study examines the dynamics of naira real exchange rate (RER) during the period 2000Q1 – 2016Q1 as well as the extent to which it deviated from its long run equilibrium path. To achieve this, we adopt the Behavioural Equilibrium Exchange Rate (BEER) model approach and incorporate the...