Fila de probabilidad de una variable discreta
Para una variable aleatoria discretaXXtomando valoresx1,…,xkx_1,\ldots,x_kcon probabilidades pi=P(X=xi)p_i=P(X=x_i), se requiere: 0≤pi≤1,∑i=1kpi=1.0\le p_i\le 1,\qquad \sum_{i=1}^k p_i=1. la mesa(xi,pi)(x_i,p_i)se llama ley de distribución deXX.
“Ley”: no una ley de la naturaleza, sino una lista completa de probabilidades de valores
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