The paper presents selected problems related to the quality assessment from the statistical perspective of survey data based on Internet sources. Internet access is consequently expanding all over the world. In parallel ...

One of the key elements related to calculating Customer Lifetime Value is to estimate the duration of a client’s relationship with a bank in the future. This can be done using survival analysis. The aim of the article is ...

We review the theory and evidence on IPO activity and underpricing focusing on the Warsaw Stock Exchange. Although the topic has been under investigation in the past, we believe that the recent decade of low interest rates ...

We study an experiment in which we determine unknown measurements of p objects in n weighing operations according to the model of the chemical balance weighing design. We determine a design which is D‑optimal. For the ...

The article carried out a study on the local housing policy of Łódź and Kraków in the year 2006 and 2017. A comparative analysis was carried out in terms of population, housing stock (including social and municipal flat), ...

Areas of research in economics and management science become increasingly close – they overlap and become very similar. New events, new products of people’s actions, new patterns of behaviour arise with a pace unknown ...

Design‑based estimation of finite population parameters such as totals usually relies on the knowledge of inclusion probabilities characterising the sampling design. They are directly incorporated into sampling weights and ...

The purpose of this publication is to propose a permutation test to detect the departure from symmetry in multidimensional contingency tables. The proposal is a multivariate extension of McNemar’s test. McNemar’s test could ...