A discrete distribution is a statistical probability distribution that represents the possible discrete values a variable can take.

The simulation is composed of both nested and nonnested linear regression models. We then derive posterior probability estimates of the superiority of the alternative models from each of the criteria ...

The probability calculation for this example shows that two out of four possible combinations create a 50% chance for AA, and a 50% chance for Aa alleles. There is a ratio of 1:1.