The article analyses the test results evaluating the knowledge of students of basic mathematics courses at the University of Economics in Prague and at the University of Finance and Administration in Prague. The relationships between the study of the theory, the ability to formulate definitions and to solve exercises are analysed based on the results in two groups of students of the University of Economics. For this purpose the statistical evaluation utilizing the log-linear models is used. The success rate in formulating definitions in two groups of students of both universities is compared using hypothesis testing. The most common errors in the theoretical parts of the tests are presented.