An Empirical Analysis of Nigeria’s Current Account Sustainability

2017 ◽  
Vol 11 (1) ◽  
pp. 54-76
Author(s):  
Mohammed Shuaibu ◽  
Mutiu Abimbola Oyinlola
Keyword(s):  
Current Account ◽  
Unit Root ◽  
Structural Changes ◽  
Structural Break ◽  
Unit Root Test ◽  
Jel Classification ◽  
Cointegration Test ◽  
Annual Data ◽  
Causality Test ◽  
Current Account Sustainability

This study reexamines the sustainability of the current account in Nigeria over four decades using time-series analysis on annual data from 1981 to 2013. We focus on two analytical distinctions to the inter-temporal budget constraint (IBC) hypothesis in relation to previous studies. First, we extend the standard bivariate approach to a multivariate framework that accounts for the roles of oil price variations and financial deepening, which have important implications for resource allocation. Second is the use of the Toda–Yamamoto modified Wald (MWALD)-based causality test that is also carried out to arbitrage between the results with and without a structural break. It employs both the conventional unit root test (augmented Dickey–Fuller [ADF] and Phillips–Perron [PP]) and the unit root test with a structural break (Perron, 2006; Zivot & Andrews, 1992). It also carries out the conventional residual-based cointegration test (Engle & Granger, 1987) and the residual-based cointegration test with a structural break (Gregory & Hansen, 1995). Findings suggest that there is current account sustainability in Nigeria and structural changes were not very potent during the period under consideration. This implies that the Nigerian economy complied with the IBC hypothesis, suggesting that exports could actually finance imports. JEL Classification: F30, F32

scholarly journals Explaining India’s current account deficit: a time series perspective

2019 ◽  
Vol 26 (1) ◽  
pp. 117-138
Author(s):  
Harendra Kumar Behera ◽  
Inder Sekhar Yadav
Keyword(s):  
Current Account ◽  
Unit Root ◽  
Current Account Deficit ◽  
Structural Break ◽  
Current Account Balance ◽  
Fiscal Deficit ◽  
Causality Test ◽  
Content Type ◽  
Financial Account ◽  
Cointegration Tests

Purpose The purpose of this paper is to examine the issue of high current account deficit (CAD) from various perspectives focussing its behaviour, financing pattern and sustainability for India. Design/methodology/approach To begin with the trends, composition and dynamics of CAD for India are analysed. Next, the influence of capital flows on current account is investigated using Granger non-causality test proposed by Toda and Yamamoto (1995) between current account balance (CAB) to GDP ratio and financial account balance to GDP ratio. Also, the sustainability of India’s current account is examined using different econometrics techniques. In particular, Husted’s (1992), Johansen’s cointegration and vector error correction model (VECM) is applied along with conducting unit root and structural break tests wherever applicable. Further, long-run and short-run determinants of the CAB are estimated using Johansen’s VECM. Findings The study found that the widening of CAD is due to fall in household financial savings and corporate investments. Also, it was found that a large part of India’s CAD has been financed by FDI and portfolio investments which are partly replaced by short-term volatile flows. The unit root and cointegration tests indicate a sustainable current account for India. Further, econometric analysis reveals that India’s current account is driven by fiscal deficit, terms of trade growth, inflation, real deposit rate, trade openness, relative income growth and the age dependency factor. Practical implications Since India’s CAD has widened and is expected to widen primarily due to rise in gold and oil imports, policy makers should focus on achieving phenomenal export growth so that a sustainable current account is maintained. Also, with rising working-age and skilled population, India should focus more on high-value product exports rather than low-value manufactured items. Further, on the structural side it is important to correct fiscal deficit as it is one of the important factors contributing to large CAD. Originality/value The paper is an important empirical contribution towards explaining India’s CAD over time using latest and comprehensive data and econometric models.

scholarly journals Causal Relationship between Foreign Direct Investment and Economic Growth in Nigeria: 1970-2013

2015 ◽  
Vol 7 (11) ◽  
pp. 230 ◽  
Author(s):  
Uwazie I. U. ◽  
Igwemma A. A. ◽  
Nnabu Bernard Eze
Keyword(s):  
Economic Growth ◽  
Foreign Direct Investment ◽  
Unit Root ◽  
Direct Investment ◽  
Developing Economies ◽  
Unit Root Test ◽  
Annual Data ◽  
Policy Reforms ◽  
Causality Test ◽  
Long Run

Foreign direct investment is presumed to play immense role in economic growth in both developed and developing economies. This assumption has motivated the army of studies to actually determine the nexus between foreign direct investment and economic growth in Nigeria. But these studies were not unified on the direction of the causation, hence the need for the study. To effectively analyze the result, the study employs vector error correction model method of causality to analyze the annual data for the periods of 1970 to 2013. The Augmented Dickey-Fuller (ADF) unit root test show presence of unit root at level but stationary after first difference. The Johansen cointegration test confirms that the variables are cointegrated while the granger causality test affirms that foreign direct investment and economic growth reinforce each other in the short run in Nigeria. Also, it is reported that foreign direct investment granger cause economic growth both in the short and long run in Nigeria. Based on these findings, the study advocates the adoption of aggressive policy reforms to boost investors’ confidence and promotion of qualitative human capital development to lure FDI into the country. It also suggests the introduction of selective openness to allow only the inflow of FDI that have the capacity to spillover to the economy. These will attract FDI and boost economic growth in Nigeria.

scholarly journals Co-integration analysis with structural breaks: South Africa’s gold mining index and USD/ZAR exchange rate

2016 ◽  
Vol 11 (3) ◽  
pp. 109-119 ◽  
Author(s):  
Retius Chifurira ◽  
Knowledge Chinhamu ◽  
Dorah Dubihlela
Keyword(s):  
Exchange Rate ◽  
Granger Causality ◽  
Unit Root ◽  
Gold Mining ◽  
Structural Breaks ◽  
Unit Root Test ◽  
Granger Causality Test ◽  
Jel Classification ◽  
Causality Test ◽  
Breaking Points

This paper examines the presence of cointegration between South African gold mining index and USD/ZAR exchange rate. The results show that gold index and USD/ZAR exchange rate series are both I(1) and are cointegrated. The Granger causality test shows a two-way directional causality between gold index and USD/ZAR exchange rate for the period 9 June 2005-9 June 2015. By accounting for possible structural breaks, the Zivot-Andrews unit root test suggests two different breaking points in the data. By using the breaking dates to divide the dataset into 3 sub-periods, the results show that gold index and USD/ZAR exchange rate series are not cointegrated. The Granger causality test shows no causality between the two variables. This finding suggests that gold mining index does not play a key role in explaining the trends in the exchange rate and likewise exchange rate does not affect gold mining index. Keywords: USD/ZAR exchange rate, gold mining index, unit root tests, breaking points, cointegration. JEL Classification: F3, F4, F63, O47

scholarly journals INVESTASI DAN PERTUMBUHAN EKONOMI SUMATERA BARAT

2012 ◽  
Vol 1 (1) ◽  
pp. 19
Author(s):  
Melti Roza Adry
Keyword(s):  
Economic Growth ◽  
Granger Causality ◽  
Unit Root ◽  
Unit Root Test ◽  
Granger Causality Test ◽  
Cointegration Test ◽  
Growth Data ◽  
Causality Test ◽  
Result Show

The purpose of the research is to know and analysis causality between invesment and economic growth in West Sumatera. We are using invesment and Economic growth data from 1stquartal 2000 until 4thquartal 2010. We are using unit root test, cointegration test and granger causality test. The result show that investment and economoic growth have causality effect in West Sumatera

scholarly journals HUBUNGAN KAUSALITAS ANTARA PENERIMAAN PAJAK DAN PENGELUARAN NEGARA DI INDONESIA PERIODE 2000-2015

2017 ◽  
Vol 22 (1) ◽  
pp. 31-39
Author(s):  
Ridha Elvianti
Keyword(s):  
Granger Causality ◽  
Unit Root ◽  
Government Expenditure ◽  
Unit Root Test ◽  
Secondary Data ◽  
Critical Value ◽  
Tax Revenue ◽  
Annual Data ◽  
Causality Test ◽  
Augmented Dickey Fuller

This research intended to analyze the causal relationship between tax revenue and government expenditure in Indonesia. The data used in this research is secondary data form of time series. This resesarch using the approach of quantitative with Unit Root Test and Granger Causality. The observation samples in this research is annual data in the period 2000-2015 and this study examines tax revenue causes government expenditures or vice versa. Augmented Dickey Fuller (ADF) method indicates that the two variables have not stasionary unit root on data level, but the two variables have a stasionary unit root on firstdifference. Based on the result of granger causality test with a probability value of 0.7 which is below the critical value of 10% show that there is unidirectional causality from tax revenue to government expenditure.

scholarly journals VALIDITY OF F-H PUZZLE IN PAKISTAN ECONOMY: A TIME SERIES STUDY

2017 ◽  
Vol 13 (1) ◽  
pp. 89-96
Author(s):  
Haris Masood ◽  
Keyword(s):  
Time Series ◽  
Current Account ◽  
Unit Root ◽  
Unit Root Test ◽  
Cointegration Test ◽  
Time Series Study ◽  
Long Run ◽  
Johansen Cointegration ◽  
Economic Survey ◽  
Series Study

Purpose-The objective of this paper is to examine the validity of F-H puzzle in the context of Pakistan. In this study the Feldstein-Horioko puzzle investigated in Pakistan which states that the existence of relationship between saving and investment is the indication of capital immobility. Methodology-The data of gross domestic product saving, capital formation and current account from 1980 to 2016 collected from State Bank of Pakistan, IMF outlook data base and Economic Survey of Pakistan.The ADF and PP test used to find out the stationarity of the variables. Famous Johansen cointegration used to check the long run relationship between saving and investment and between current account and investment. Findings-The results of unit root test indicate that all the variables are stationary at their first difference. The empirical results of cointegration test shows that there is no long run relation exist between saving and investment and long run relationship exist between current account and investment which does not support the findings of F-H puzzle and shows that capital is perfectly mobile in case of Pakistani economy.

Convergence in per capita carbon footprint and ecological footprint for G7 countries: Evidence from panel Fourier threshold unit root test

2021 ◽  
pp. 0958305X2110114
Author(s):  
Veli Yilanci ◽  
Muhammed Sehid Gorus ◽  
Sakiru Adebola Solarin
Keyword(s):  
Unit Root ◽  
Structural Breaks ◽  
Structural Changes ◽  
Unit Root Test ◽  
G7 Countries ◽  
Convergence Hypothesis ◽  
International Climate ◽  
Per Capita ◽  
Nonlinear Behaviors ◽  
Nonlinear Unit Root Tests

This paper aims to explore the convergence of per capita carbon and ecological footprints in G7 countries during 1961–2016. For this purpose, we propose a new unit root test in the panel setting–the panel Fourier threshold unit root test. This test takes into consideration both multiple smooth structural changes and nonlinearity. According to the literature, the power of the nonlinear unit root tests is reduced in the case of ignoring structural breaks. Therefore, we expect to get more reliable empirical findings by utilizing this methodology. The empirical results of this paper show that these series have nonlinear behaviors for the period 1961–2016. Furthermore, they demonstrate that the absolute convergence hypothesis is valid in G7 countries for both regimes. Thus, governments can conduct common environmental policies, including international climate summits and agreements, instead of national-based policies to mitigate environmental deterioration in their countries.

A revisit of the unemployment rate, interest rate, GDP growth and Inflation of Pakistan: Whether Structural break or unit root?

2021 ◽  
Vol 3 (2) ◽  
pp. 80-92
Author(s):  
Sara Muhammadullah ◽  
Amena Urooj ◽  
Faridoon Khan
Keyword(s):  
Interest Rate ◽  
Unemployment Rate ◽  
Unit Root ◽  
Structural Breaks ◽  
Inflation Rate ◽  
Structural Break ◽  
Unit Root Test ◽  
Unit Root Tests ◽  
Gdp Growth ◽  
Macroeconomic Indicators

The study investigates the query of structural break or unit root considering four macroeconomic indicators; unemployment rate, interest rate, GDP growth, and inflation rate of Pakistan. The previous studies create ambiguity regarding the stationarity and non-stationarity of these variables. We employ Zivot & Andrews (1992) unit root test and Step Indicator Saturation (SIS) method for multiple break detection in mean. GDP growth and inflation rate are stationary at level whereas unit root tests fail to reject the null hypothesis of the unemployment rate and interest rate at level. However, Zivot and Andrew unit root test with a single endogenous break indicates that the unemployment rate and interest rate are stationary at level with a single endogenous break. On the other hand, the SIS method reveals that the series are stationary with multiple structural breaks. It is inferred that it is inappropriate to take the first difference of the unemployment rate and interest rate to attain stationarity. The results of this study confirmed that there exist multiple breaks in the macroeconomic variables considered in the context of Pakistan.

scholarly journals THE WEAK FORM MARKET EFFICIENCY IN THE MSCI ETF INDICES: CONVENTIONAL AND THE FOURIER UNIT ROOT TEST ON THE DEVELOPED AND DEVELOPING COUNTRIES

2020 ◽  
Vol 8 (4) ◽  
pp. 409-423
Author(s):  
Sümeyra GAZEL
Keyword(s):  
Developing Countries ◽  
Unit Root ◽  
Structural Break ◽  
Unit Root Test ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Developed Countries ◽  
Exchange Traded Funds ◽  
Unit Root Testing ◽  
Daily Data

In this study, weak form efficiency of the Exchange Traded Funds (ETF) in the Morgan Stanley Capital International (MSCI) Index of developed and developing countries is tested. The Fourier Unit Root test, which does not lose its predictive power in terms of structural break date, number and form, is used on daily data. Also, conventional unit root tests are used for comparison between two different tests. Analysis results indicate common findings in some countries for both unit root testing. However, the Fourier unit root test results relatively more support the assumption of efficient market hypothesis that developed countries may be more efficient than developing countries.

scholarly journals Monetary Policy and Return on Equity of Quoted Insurance Firms: A Time Series Study from Nigeria

2018 ◽  
Vol 2 (1) ◽  
pp. 62-76
Author(s):  
Macfubara, Minafuro Suzane ◽  
Norteh Dumbor ◽  
Gberesuu, Barida Barry
Keyword(s):  
Monetary Policy ◽  
Unit Root ◽  
Unit Root Test ◽  
Policy Instruments ◽  
Granger Causality Test ◽  
Insurance Companies ◽  
Causality Test ◽  
Return On Equity ◽  
Independent Variables ◽  
Insurance Firms

The financial system is the transmission channel of monetary policy. This study examines the effect of monetary policy on the performance of insurance firms in Nigeria from 1990 – 2017. The objective is to investigate the existing relationship between monetary policy instruments and the performance indicators of insurance companies. Secondary data were sourced from Stock Exchange factbook, Central Bank of Nigeria (CBN) Statistical Bulletin. Multiple linear regressions were formulated to examine the effect of the independent variables on the dependent variable. Return on equity was modeled as a function of treasury bill rate, monetary policy rate, interest rate, growth of money supply and exchange rate.  R2, T-Statistics, β Coefficient, F-Statistics and Durbin Watson were used to examine the extent to which the independent variables affect the dependent variables while augmented dickey fuller unit root test, granger causality test, cointgration test and error correction models was used to ascertain the dynamic relationship between monetary policy variables and return on equity of the insurance firms. Findings revealed that, all the explanatory variables have positive effect on return on equity except treasury bill rate.  The unit root test found that the variables are stationary at first difference, the cointgration test found the presence of long run relationship while the granger causality test found a uni-directional causality. The study concludes that monetary policy has moderate effect on the return on equity of the insurance firms. We recommend that management of insurance companies should devise measures of managing the negative effects of the monetary policy instruments to enhance the performance of the insurance companies.

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