Sampling - Sampling (With|without) replacement (WR|WOR)

Thomas Bayes


Sampling schemes may be:

  • without replacement ('WOR'—no element can be selected more than once in the same sample)
  • or with replacement ('WR'—an element may appear multiple times in the one sample).


If we catch fish, measure them, and immediately return them to the water before continuing with the sample, this is a WR design, because we might end up catching and measuring the same fish more than once. However, if we do not return the fish to the water (e.g., if we eat the fish), this becomes a WOR design.

Documentation / Reference

Discover More
Binomial Distribution
(Probability|Statistics) - Binomial Distribution

The binomial distribution is the discrete probability distribution of the number of successes in a sequence of n independent yes/no experiments, each of which yields success with probability p. The...

Share this page:
Follow us:
Task Runner