# poisscdf

Cumulative distribution function (CDF) for Poisson distribution

### poisscdf(x, mu)

• The input arrays mu and x should have the same sizes. They contain, respectively, mean values of the CDFs being evaluated, and x values at which the CDFs are evaluated.
• If one of the inputs is a scalar, it would be expanded to match the size of the other input.
• It returns NaN for negative elements of mu.