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Abstract

This article explains the theoretical aspects underlying the determination of price inter-relationships, price leadership and the time that it takes for prices to react to change. The model is discussed and expounded on the basis of four steps: stationary-stochastic processes, simple autoregressive models, causality testing and multiple autoregressive models. The use of the model is not without limitations and pitfalls, but when applied with economic realism and logic, the results can be useful.

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