Effects of stochastic IMF sampling and the spatial distribution of stars on cluster structural parameters depending on cluster mass and age. The X-axis represents R₅₀/R₈₀; the Y-axis – R₃₀/R₅₀. Results are shown for clusters with r_c = 0.2 arcsec and γ = 2.8. Structural parameters are measured in the F475W passband. Clusters that possess all stars are marked with red dots, while clusters with PMS stars subtracted – with blue dots.