Instances of the class <a class="localLink" href="/Observation">Observation</a> are used to specify observations about an entity (which may or may not be an instance of a <a class="localLink" href="/StatisticalPopulation">StatisticalPopulation</a>), at a particular time. The principal properties of an <a class="localLink" href="/Observation">Observation</a> are <a class="localLink" href="/observedNode">observedNode</a>, <a class="localLink" href="/measuredProperty">measuredProperty</a>, <a class="localLink" href="/measuredValue">measuredValue</a> (or <a class="localLink" href="/median">median</a>, etc.) and <a class="localLink" href="/observationDate">observationDate</a> (<a class="localLink" href="/measuredProperty">measuredProperty</a> properties can, but need not always, be W3C RDF Data Cube "measure properties", as in the <a href="https://www.w3.org/TR/vocab-data-cube/#dsd-example">lifeExpectancy example</a>).
See also <a class="localLink" href="/StatisticalPopulation">StatisticalPopulation</a>, and the <a href="/docs/data-and-datasets.html">data and datasets</a> overview for more details.
{
"id": "https://schema.org/Observation",
"label": "Observation",
"comment": "Instances of the class <a class=\"localLink\" href=\"/Observation\">Observation</a> are used to specify observations about an entity (which may or may not be an instance of a <a class=\"localLink\" href=\"/StatisticalPopulation\">StatisticalPopulation</a>), at a particular time. The principal properties of an <a class=\"localLink\" href=\"/Observation\">Observation</a> are <a class=\"localLink\" href=\"/observedNode\">observedNode</a>, <a class=\"localLink\" href=\"/measuredProperty\">measuredProperty</a>, <a class=\"localLink\" href=\"/measuredValue\">measuredValue</a> (or <a class=\"localLink\" href=\"/median\">median</a>, etc.) and <a class=\"localLink\" href=\"/observationDate\">observationDate</a> (<a class=\"localLink\" href=\"/measuredProperty\">measuredProperty</a> properties can, but need not always, be W3C RDF Data Cube \"measure properties\", as in the <a href=\"https://www.w3.org/TR/vocab-data-cube/#dsd-example\">lifeExpectancy example</a>).\nSee also <a class=\"localLink\" href=\"/StatisticalPopulation\">StatisticalPopulation</a>, and the <a href=\"/docs/data-and-datasets.html\">data and datasets</a> overview for more details.",
"subTypeOf": "https://schema.org/Intangible",
"enumerationtype": "",
"equivalentClass": "",
"properties": "https://schema.org/additionalType, https://schema.org/alternateName, https://schema.org/description, https://schema.org/disambiguatingDescription, https://schema.org/identifier, https://schema.org/image, https://schema.org/mainEntityOfPage, https://schema.org/marginOfError, https://schema.org/measuredProperty, https://schema.org/measuredValue, https://schema.org/name, https://schema.org/observationDate, https://schema.org/observedNode, https://schema.org/potentialAction, https://schema.org/sameAs, https://schema.org/subjectOf, https://schema.org/url",
"subTypes": "",
"supersedes": "",
"supersededBy": "",
"isPartOf": "https://pending.schema.org"
}