In the current issue of the journal “Econometrics Ekonometria. Advances in Applied Data Analysis”, six articles are published. Jan L. Bednarczyk and Katarzyna Brzozowska- Rup discuss the Non-Decreasing Economic Growth Rate of Inflation (NDEGRI). They present the results of estimating economic growth depending on the inflation levels in selected countries. The paper by Anna Jańska, and Arleta Kędra concerns the factors determining purchases of insurance products. They analyzed potential relations between determinants of purchasing decisions regarding insurance products and socio-demographic variables, i.e. age, gender, place of residence, income, occupational status, and number of people in a household. The use of fuzzy logic in the corporate innovative potential assessment is the subject of the article by Tomasz Nawrocki. The model proposed in the article provides a framework for combined static and dynamic potential innovativeness assessment with the use of fuzzy logic. The next author, Michał Litwiński, studies the influence of income inequalities on socio-economic development in the European Union. The author attempts to verify the hypothesis that the character of the impact of income inequalities on socioeconomic development in the European Union is negative. In the paper by Ilona Błaszczak-Przybycińska and Marta Marszałek, the calculations of the household production satellite account for Poland are presented, the methodology remarks and results are given. The last article, by Beata Bieszk-Stolorz, shows the results of using the modified Lunn-McNeil model in the assessment of intensity of exiting from unemployment. The research made it possible to identify groups of people taking up work with the least intensity and refusing to take up work with the greatest intensity.