Journal of Economics and Economic Education
Research, Volume 10, Number 2, 2009
explanatory variables in the dynamic behavi
or of existing variables thus facilitates
in capturing both the short-run dynamics
and long-run relationships between the
variable. The chronological granger causality between the variables can be explored
by using a joint F-test to the coefficients
of each explanatory variable in the VECM.
The variance decomposition of the equity
returns is based on the analysis of
responses of the variables to shocks. When
there is a shock through the error term
we study the influence of this shock to the other variables of the system and thus get
information about the time horizon and percen
tage of the error variance F test is in
fact a within-sample causality tests and
does not allow us to gauge the relative
strength of the of causality among variables beyond the sample period.