EN
This paper brings some preliminary results of a parallel, independent analysis made on the synthetic indicators of economic activity for Poland compiled according to five altemative formulas developed by Z. Matkowski and filled with the CSO survey data. Apparent seasonality seen on charts has been additionally evidenced by autocorrelation functions. Correlation results show which variants of the indicator have similar empirical distribution and which are quite different. The final choice of the formula will be made after the completion of the analysis.