<xs:element name="Subgroup" type="StatsValuesType" maxOccurs="unbounded"><xs:annotation><xs:documentation>Each Subgroup element contains a list of the characteristic measurement values used in a subgroup in this statistical evaluation.</xs:documentation></xs:annotation></xs:element>
The required n attribute is the number of subgroups in the list.
Source
<xs:complexType name="SubgroupValuesType"><xs:annotation><xs:documentation>The SubgroupsType defines a list of measured value subgroups.</xs:documentation></xs:annotation><xs:sequence><xs:element name="Subgroup" type="StatsValuesType" maxOccurs="unbounded"><xs:annotation><xs:documentation>Each Subgroup element contains a list of the characteristic measurement values used in a subgroup in this statistical evaluation.</xs:documentation></xs:annotation></xs:element></xs:sequence><xs:attribute name="n" type="NaturalType" use="required"><xs:annotation><xs:documentation>The required n attribute is the number of subgroups in the list.</xs:documentation></xs:annotation></xs:attribute></xs:complexType>
<xs:attribute name="n" type="NaturalType" use="required"><xs:annotation><xs:documentation>The required n attribute is the number of subgroups in the list.</xs:documentation></xs:annotation></xs:attribute>