The biggest business activity fluctuation analysts’ attention is focused on leading indicators. It is due to their utility in forecasting resulting form their properties. Leading indicators are aggregates describing a part of economy (e.g. sector, branch) and, therefore, they also partly...

The biggest business activity fluctuation analysts’ attention is focused on leading indicators. It is due to their utility in forecasting resulting form their properties. Leading indicators are aggregates describing a part of economy (e.g. sector, branch) and, therefore, they also partly...

The first aim of the paper is to identify business cycle in the Polish industry and in departments of the industry according to PAC . The second aim is the re-examination of the co-variability between the calculated fluctuations. When identifying the fluctuations, first one has to purify the...