2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/162069By means of the notion of umbrae indexed by multisets, a general method to express estimators and their products in terms of power sums is derived. A connection between the notion of multiset and integer partition leads immediately to a way to speed up the procedures. Comparisons of computational times with known procedures show how this approach turns out to be more efficient in eliminating much unnecessary computation.21 pages, 7 tablesComputationCombinatoricsStatistics Theory05A40, 65C60, 62H12, 68W30text