Correlation matrix for properties of subsets of the RxAGN sample. Colors indicate positive or negative Pearson correlation coefficient, written on the plot for each parameter pair with its corresponding p-value in parentheses. The considered variables in the correlation matrix are the 1.4 GHz radio luminosity, log L_1.4 [W Hz⁻¹], power-law spectral index α, broken power-law spectral indices α₁ and α₂, and source size, log D [kpc]. The correlation matrix presented in this figure indicates the presence and significance of correlations between different properties of the subsets of the RxAGN sample.