The n-Zipf analysis of financial data series and biased data series

The Zipf analysis of n-words in random sequences and financial data series like the stock prices of a company has been performed. The bias as well as the resulting staircase structure of the Zipf plots are taken into account in the subsequent analysis, It is found that correlations for the sign of t he fluctuations as well as for the amplitude of the fluctuations can be fou nd in financial time series. The relevance of the n-Zipf analysis to financ ial sequences is underlined to be only weakly predictive for a "binary tran sformation level", but could be more interesting for "higher translation le vels", (C) 1999 Elsevier Science B.V. All rights reserved.