A uniform distribution is one for which the probability of occurrence is the
same for all values of X. It is sometimes called a rectangular distribution.
For example, if a fair die is thrown, the probability of obtaining any one of
the six possible outcomes is 1/6. Since all outcomes are equally probable, the
distribution is uniform. If a uniform distribution is divided into equally spaced
intervals, there will be an equal number of members of the population
in each interval.