> For the complete documentation index, see [llms.txt](https://ai.nuhil.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai.nuhil.net/statistics/population-and-sample.md).

# Population and Sample

**Population** is a set of all elements or items that you’re interested in. Populations are often vast, which makes them inappropriate for collecting and analyzing data.

**Sample** is a subset of a population.