Discrete distributions

• How to Find the Median and Modes of a Discrete Uniform Distribution
  For a discrete uniform distribution, every support value is a mode. The median is the middle value for odd support size and spans two middle values for even size.
• How to Find the Inverse of a Poisson Distribution Function
  The inverse Poisson CDF is a discrete quantile: find the smallest integer k whose cumulative probability is at least p; it is computed numerically.
• How to Find the Median of Discrete and Continuous Variables
  Find a median from the cumulative distribution function: use the 0.5 crossing for continuous laws and account for jumps in discrete or mixed laws.