“…In order to carry out the research, the authors used the author's conversion method that has many advantages. Among them, it is essential to mention that it combines both the precision of the results of the multicriteria methods, such as the AHP (Kubler, Robert, Derigent, Voisin, & Traona, 2016;Lya, Lai, Hsu, & Shih, 2018), ANP (Becker, Becker, Sulikowski, & Zdziebko, 2018), the ELECTRE (Corrente, Greco, & Słowiński, 2016), the PROMETHEE (Andreopoulou, Koliouska, Galariotis, & Zopounidis, 2018), verbal methods (Trzaskalik, 2014), TOPSIS (Chmielarz & Zborowski, 2018), BIPOLAR (Trzaskalik, 2014). Moreover, the process of collecting data for calculations is as simple as in a case of the scoring method, and the simplicity of the result processing which is the characteristic of the scoring method.…”