# Chi-square distribution facts for kids

For other uses, see Chi.

In probability theory and statistics, the **chi-square distribution** is one of the most widely used theoretical probability distributions. It is used in statistical significance tests. It is useful, because it is relatively easy to show that certain probability distributions come close to it, under certain conditions. One of these conditions is that the null hypothesis must be true. Another one is that the different random variables (or observations) must be independent of each other.

## Images for kids

All content from Kiddle encyclopedia articles (including the article images and facts) can be freely used under Attribution-ShareAlike license, unless stated otherwise. Cite this article:

Chi-square distribution Facts for Kids. *Kiddle Encyclopedia.*