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Individual differences |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |
| Probability mass function|
n=5 where n=b-a+1
| Cumulative distribution function|
n=5 where n=b-a+1. The convention is used that the cumulative mass function is the probability that
|Template:Probability distribution/link mass|
In probability theory and statistics, the discrete uniform distribution is a discrete probability distribution that can be characterized by saying that all values of a finite set of possible values are equally probable.
A random variable that has any of possible values that are equally probable, has a discrete uniform distribution, then the probability of any outcome is . A simple example of the discrete uniform distribution is throwing a fair die. The possible values of are 1, 2, 3, 4, 5, 6; and each time the die is thrown, the probability of a given score is 1/6.
where the Heaviside step function is the CDF of the degenerate distribution centered at . This assumes that consistent conventions are used at the transition points.
See rencontres numbers for an account of the probability distribution of the number of fixed points of a uniformly distributed random permutation.de:Diskrete Gleichverteilungnl:Discrete uniforme verdeling fr:loi uniforme discrète
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