Discrete Distribution Model-Selection Guide

Custom PMF: a defined support with assigned mass.
Uniform: equally likely consecutive integers.
Bernoulli: one binary trial.
Binomial: successes in fixed independent trials with constant p.
Poisson: events in fixed exposure with stable lambda.
Hypergeometric: successes sampled without replacement from a finite population.
Geometric: trials until first success.
Always verify process assumptions; do not choose solely from the word count.

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