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Probability vector

In mathematics and statistics, a Probability Vector is a vector with non-negative entries which add up to one.

Here are examples of a probability vector:

x0 = $ \begin{bmatrix} .5 \\ .25 \\ .25 \end{bmatrix} $

x1 = $ \begin{bmatrix} 0 \\ 1 \\ 0 \end{bmatrix} $

x2 = $ \begin{bmatrix} .65 \\ .35 \end{bmatrix} $

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