%0 Journal Article %T What does the research tell us about the understanding of the random variables and its probability distributions? %J Boletín de estadística e Investigación operativa %D 2022 %V 38 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/BEIO_2022_38_3_a3/ %F BEIO_2022_38_3_a3