@ARTICLE {, title = {Moment, prosím!}, author = {Riečan, Beloslav}, journal = {Obzory matematiky, fyziky a informatiky}, year = {2012}, volume = {41}, number = {2}, pages = {19--25}, issn = {1335-4981}, abstract = {An elementary proof of the formula for computation of the dispersion of continuous random variables is presented.}, }