Jan Grzegorek, Andrzej P. Wierzbicki
Vol no: 3
The paper starts with the issue of estimating duality gaps – the differences in development measured in years between diverse districts (powiat in Polish) – in Mazovia, taking the number of computer laboratories per primary or secondary school as a basic index of the development of information society. This is based on a classical statistical approach of estimating the parameters of logistic curves. It turns out that these gaps amount up to 16-17 years – a very large differences in development even between neighboring districts.