Ekonometria 25/2

In this issue of the journal Econometrics Ekonometria. Advances in Applied Data Analysis, five articles are published. Dimitrios Vagianos and Nikos Koutsoupias describes the opportunities for framing coworking spaces marketing strategies via social media indices. The authors try to provide Digital Marketers with an alternative perspective of Social Media Marketing Strategies related to the innovative Coworking Spaces Business. In the next article by Marcin Salamaga, the correspondence analysis was used in the study of foreign divestment in the Visegrad Countries during the Coronavirus crisis. The author pointed out that the deterioration of the general investment atmosphere, economic recession, changes in consumption patterns caused by the COVID-19 pandemic have forced various foreign investors to restrict or suspend investments in industries which are more sensitive to the effects of the pandemic. For these reasons the reassessment of investment risk was necessary. The aim of the study described in the article by Paweł Kaczmarczyk is to test the effectiveness of an econometric model with dichotomous (binary) explanatory variables in the approximation and prediction of different kinds of cyclicality (annual, monthly, weekly, and daily) of demand for telephone services. The next article, by Angelika Kantor, concerns multidimensional analysis of the green growth of the European Union countries in 2019. For this purpose, secondary data were used and the non-pattern model together with Hellwig and Ward methods were implemented. Empirical analysis of the environmental Kuznets curve for economic growth and CO2 emissions in north Africa countries is the subject of the article by Mohammed Touitou. To prove these relations a panel cointegration approach was used and the Ordinary Least Square (OLS) method was applied.