The paper analyzes cointegration in vector autoregressive processes (VARs) for the cases when both number of coordinates, N, and time periods, T, are large same order. We propose a way to examine VAR order 1 presence based on modification Johansen likelihood ratio test. advantage our procedure over original test its finite sample corrections is that does not suffer from overrejection. This achi...

T his paper analyses the relation between GNP sectors of Iran’s economy. The different sectors of the economy directly or indirectly affect each other and can complement or follow each other. Using a number of empirical tests, the paper finds evidence of seasonal or periodic integration in the underlying data. This means that the conventional cointegration tests may not be robust and in re...

In this paper we model the multicointegration relation, allowing for one structural break. Since multicointegration is a particular case of polynomial or I(2) cointegration, our proposal can also be applied in these cases. The paper proposes the use of a residualbased Dickey-Fuller class of statistic that accounts for one known or unknown structural break. Finite sample performance of the propo...

1 The Background Elementary courses in statistics introduce at an early stage the key assumption of “random sampling”. In more technical language, the data set is assumed to be identically and independently distributed (i.i.d.). In this framework a range of simple and elegant results can be derived, for example, that the variance of the mean of n observations is 1/n times the variance of the ob...