Podobieństwo dynamiki wahań koniunktury w wybranych sektorach gospodarki Polski

The paper includes the definition of the measure of the similarity of two functions. This measure is a quantitative characteristic of similarity of functions graphs and it can be helpful in comparison the dynamics of economic processes. The construction of the measure includes two special cases; functions defined on intervals and functions with discrete domains. The considerations are generalized in a natura) manner in research concerning the similarity of stochastic processes.