W pracy zostały przedstawione dwa kryteria dotyczące selekcji modeli, mianowicie kryterium Akaike: AIC (Akaike’s Information Criterion) i kryterium bayesowskie: BIC (Bayesian Information Criterion).This paper studies the AlC and B1C (Akaike’s and Bayesian Information Criterion) replacement for: - Box’s (1949) M test of the homogeneity of covariances, - Wilks’ (1932) Л criterion for testing the equality of mean vectors and - likelihood ratio test of the complete homogeneity as two of model - selection criterions. AIC and BIC are new procedures for comparing means and samples, and selecting the homogeneous groups from heterogenous ones in multi-sample data analysis problems. f rom the Bayesian view-point, the approach to the model-s...