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In the article we define a quantity which measures the quality of the approximation of a function, given by a table, with a function from a certain family D of nonconstant functions. For this purpose one has to find the infimum and the supremum of the set of correlation coefficients between the given function and functions from D.We do this for the family of all nonconstant functions and for the family of growth functions. V članku je definirana količina, ki meri kvaliteto aproksimacije tabelarično podane funkcije družine D nekonstantnih funkcij. V ta namen je treba poiskati infimum in supremum množice korelacijskih koeficientov med dano funkcijo in funkcijami iz D. Tu je to storjeno za družino vseh nekonstantnih funkcij in za družino rastnih funkcij.

V članku je definirana količina, ki meri kvaliteto aproksimacije tabelarično podane funkcije družine D nekonstantnih funkcij. V ta namen je treba poiskati infimum in supremum množice korelacijskih koeficientov med dano funkcijo in funkcijami iz D. Tu je to storjeno za družino vseh nekonstantnih funkcij in za družino rastnih funkcij. In the article we define a quantity which measures the quality of the approximation of a function, given by a table, with a function from a certain family D of nonconstant functions. For this purpose one has to find the infimum and the supremum of the set of correlation coefficients between the given function and functions from D.We do this for the family of all nonconstant functions and for the family of growth functions.