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