TY JOUR TI ON THE PROBLEM OF SELECTING A DISTRIBUTION LAW FOR SAMPLES OF RANDOM VARIABLES AND ITS PRACTICAL APPLICATION IN THE INTERESTS OF EMERCOM OF RUSSIA KW random variable sample KW distribution laws KW bowl chart KW beta distribution JO Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia» AU Tarantsev, A.A. AU Matveev, A.V. AU Shupnev, D.S. AU Shupnev, I.D. PY 2026 IS 2026 PB Saint-Petersburg University of State Fire Service of Emercom of Russia