A StatisticalPopulation is a set of instances of a certain given type that satisfy some set of constraints. The property [populationType](http://schema.org/populationType) is used to specify the type. Any property that can be used on instances of that type can appear on the statistical population. For example, a [StatisticalPopulation](http://schema.org/StatisticalPopulation) representing all [Person](http://schema.org/Person)s with a [homeLocation](http://schema.org/homeLocation) of East Podunk California, would be described by applying the appropriate [homeLocation](http://schema.org/homeLocation) and [populationType](http://schema.org/populationType) properties to a [StatisticalPopulation](http://schema.org/StatisticalPopulation) item that stands for that set of people.The properties [numConstraints](http://schema.org/numConstraints) and [constrainingProperties](http://schema.org/constrainingProperties) are used to specify which of the populations properties are used to specify the population. Note that the sense of "population" used here is the general sense of a statisticalpopulation, and does not imply that the population consists of people. For example, a [populationType](http://schema.org/populationType) of [Event](http://schema.org/Event) or [NewsArticle](http://schema.org/NewsArticle) could be used. See also [Observation](http://schema.org/Observation), and the [data and datasets](https://schema.org/docs/data-and-datasets.html) overview for more details.