## Documentation Center |

When you create random numbers using software, the results are
not random in a strict, mathematical sense. However, software applications,
such as MATLAB^{®}, use algorithms that make your results appear
to be random and independent. The results also pass various statistical
tests of randomness and independence. These apparently random and
independent numbers are often described as *pseudorandom* and *pseudoindependent*.
You can use these numbers as if they are truly random and independent.
One benefit of using pseudorandom, pseudoindependent numbers is that
you can repeat a random number calculation at any time. This can be
useful in testing or diagnostic situations.

Although repeatability can be useful, it is possible to accidentally repeat your results when you really want different results. There are several ways to avoid this problem. The documentation contains several examples that show how to ensure that your results are different when that is your intention.

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