Probability vector
= Probability vector
{title2=$p_i\geq0,\quad\sum_i p_i=1$}
{wiki}
A <probability vector> lists the <probabilities> of the outcomes in a finite <sample space>. Its entries are nonnegative and sum to one, so a column <probability vector> is a <point> of a <probability simplex>. Row and column conventions describe the same <probability distribution>, but they determine whether a <stochastic matrix> acts on the right or its <transpose> acts on the left.