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ISSN: 2162-6359

International Journal of Economics & Management Sciences
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Research Article

Effects of Causality and Error Correction on Volatility Modeling: A Simulation Approach

Rotich Titus Kipkoech*

Student, Mount Kenya University , Eldoret, Kenya

*Corresponding Author:
Rotich Titus Kipkoech
Student, Mount Kenya University
Eldoret-9305-30100, Kenya
Tel: (053) 2033712
E-mail: [email protected]

Received date: October 04, 2015 Accepted date: October 23, 2015 Published date: October 28, 2015

Citation: Kipkoech RT (2015) Effects of Causality and Error Correction on Volatility Modeling: A Simulation Approach. Int J Econ Manag Sci 4:297. doi:10.4172/2162-6359.1000297

Copyright: © 2015 Kipkoech RT. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Generalized Auto Regressive Conditional Heteroskedasticity (GARCH) models are usually used to analyse time series data with high volatility clustering. In this paper, we analyse the effects of Granger Causality Model (GCM) and Error Correction Model (ECM) in analysing a time series and accordingly, we simulate two series of data using the GARCH1 model which are used for the analysis. The choice of the simulation model is based on its ability to capture volatility and heteroskedasticity. GCM2 and ECM3 models’ parameters are investigated for adequacy. Results from Augmented Dickey Fuller (ADF), Phillips PerronPhillips Perron (PP) and Kwiatkowski Philips Schmidt Shin (KPSS) tests indicate stationarity in the data as expected. GCM is built to demonstrate all the long term relationships. The two series Granger Caused each other. A linear ECM is also fitted and there is evidence that a short-term relationship exists between these two series. A high threshold value exists at the second lag, an indication of simple smoothing in the data. The residual deviance was greater than the degrees of freedom asserting that the model perfectly fit the data, supported by high R2 value of 0.871. Residuals from the fitted linear model are also stationary. The study concludes that ECMs and GCMs are appropriate in analysing time series. It is recommended that a similar study be undertaken but with a combination of ARMA Auto Regressive Moving Average (ARMA) Process and GARCH models. Further study should also be conducted on tail clustering analysis.

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