Narrow search
Showing 1 - 4 of 4
Cover Image
On fractionally integrated logistic smooth transitions in time series
Shittu, Olanrewaju I.; Yaya, OlaOlua S. - In: CBN journal of applied statistics 2 (2011) 1, pp. 1-13
Long memory and nonlinearity are two key features of some macroeconomic time series which are characterized by persistent shocks that seem to rise faster during recession than it falls during expansion. A variant of nonlinear time series model together with long memory are used to examine these...
Persistent link: https://www.econbiz.de/10011477601
Cover Image
Testing for single bubble episode in the Nigerian stock market : an empirical investigation
Iliyasu, Jamilu; Saba, Ndayezhin D. - In: CBN journal of applied statistics 10 (2019) 1, pp. 29-49
This study evaluates a single bubble episode in the Nigerian Stock Exchange (NSE) by utilizing monthly data on nominal and real all-share index (ASI) from January 2010 to December 2017. Analysis of data based on Sup Augmented Dickey-Fuller (SADF) test for bubble detection suggests non-existence...
Persistent link: https://www.econbiz.de/10012178349
Cover Image
Exchange-rates volatility in Nigeria : application of GARCH models with exogenous break
Bala, Dahiru A.; Asemota, Joseph O. - In: CBN journal of applied statistics 4 (2013) 1, pp. 89-116
This paper examines exchange-rate volatility with GARCH models using monthly exchange-rate return series from 1985:1 to … compare estimates of variants of GARCH models with break in respect of the US dollar rates with exogenously determined break … estimation of volatility models with breaks as against those of GARCH models without volatility breaks and that the introduction …
Persistent link: https://www.econbiz.de/10011476095
Cover Image
Exchange rate volatility in Nigeria : consistency, persistency & severity analyses
Adeoye, Babatunde W.; Atanda, Akinwande A. - In: CBN journal of applied statistics 2 (2011) 2, pp. 29-49
examined using the ADF and PP approach, the stationary process, and order of the incorporated series. The ARCH and GARCH models …
Persistent link: https://www.econbiz.de/10011477452