TY - JOUR T1 - Moment, prosím! A1 - Riečan, Beloslav JA - Obzory matematiky, fyziky a informatiky Y1 - 2012 VL - 41 IS - 2 SP - 19 EP - 25 SN - 1335-4981 N2 - An elementary proof of the formula for computation of the dispersion of continuous random variables is presented. ER -