L.V. Nedorezov Computational Ecology and Software 2220-721X 2012 2 83-95 06/2012 International Academy of Ecology and Environmental Sciences population dynamics stochastic mathematical model data collection In current publication the stochastic model of individual migrations within the limits of closed domain and processes of data collections using in entomology are considered. The behavior of data variation with respect to changing of population size is analyzed. In particular, it was shown that dependence of standard deviations has a non-linear character under the population density increasing. It was also shown that confidence level to datasets of population density which were obtained with traditional methods and under the low value of population density must be extremely low. DOI 10.0000/issn-2220-721x-compuecol-2012-v2-0007 http://www.iaees.org/publications/journals/ces/articles/2012-2(2)/modeling-and-analysis-of-some-methods.pdf