A StatisticalPopulation is a set of instances of a certain given type that satisfy some set of constraints. The property <a class="localLink" href="http://schema.org/populationType">populationType</a> 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 <a class="localLink" href="http://schema.org/StatisticalPopulation">StatisticalPopulation</a> representing all <a class="localLink" href="http://schema.org/Person">Person</a>s with a <a class="localLink" href="http://schema.org/homeLocation">homeLocation</a> of East Podunk California, would be described by applying the appropriate <a class="localLink" href="http://schema.org/homeLocation">homeLocation</a> and <a class="localLink" href="http://schema.org/populationType">populationType</a> properties to a <a class="localLink" href="http://schema.org/StatisticalPopulation">StatisticalPopulation</a> item that stands for that set of people. The properties <a class="localLink" href="http://schema.org/numConstraints">numConstraints</a> and <a class="localLink" href="http://schema.org/constrainingProperties">constrainingProperties</a> 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 statistical population, and does not imply that the population consists of people. For example, a <a class="localLink" href="http://schema.org/populationType">populationType</a> of <a class="localLink" href="http://schema.org/Event">Event</a> or <a class="localLink" href="http://schema.org/NewsArticle">NewsArticle</a> could be used. See also <a class="localLink" href="http://schema.org/Observation">Observation</a>, and the <a href="/docs/data-and-datasets.html">data and datasets</a> overview for more details.