Guzik, Bogusław2013-03-182013-03-181998Ruch Prawniczy, Ekonomiczny i Socjologiczny 60, 1998, z. 3-4, s. 315-3310035-9629http://hdl.handle.net/10593/5485The article indicates two approaches of modelling changes in number o f economic subjects as a result of changes in law: — issuing from zero-one variables, — issuing from constant impulsory variables. The second approach was described quite in detail, and more particularly - one o f its variants where a number of economic subjects generated in function of a given legal disposition increases accordingly to a power. Y — ^¡^CLzIx + Cta , X where: 1 _ ÍT01 for i>x 0 for t < I T = (i - X + 1); t - date of entering into force of a legal disposition. This model was illustrated with an example relating to fluctuation o f the number of accountancy offices in Bydgoszcz in relation with changed law on economic activities in the period from 1 quarter of 1990 to 4th quarter of 1997. The model obtained suits veiy well to empirical data - determination factor was up to 99,9 per cent.plArtykuł