Pinto, CarlaLopes, António M.Tenreiro Machado, J. A.2019-03-262019-03-2620122241-0503http://hdl.handle.net/10400.22/13128We study similar statistical properties observed in distinct real world data. In particular, we focus on the power law (PL) distribution. We nd that some data is well tted by a single PL distribution whereas other phenomena force the use of two distinct PLs. This behavior is similar in, a priori, unrelated phenomena, such as catastrophes (terrorism, earthquakes) and variables associated to man-made systems, such as distribution of the number of words in texts or of the number of hits received by websites.engPower lawReal world phenomenaDouble power lawjournal article