The required n attribute is the number of values in the list.
Source
<xs:element name="Values" type="SubgroupDecimalArrayType"><xs:annotation><xs:documentation>The Values element is the array of measured values associated with subgroup ids.</xs:documentation></xs:annotation></xs:element>
The SubgroupDecimalsType defines a list of SubgroupDecimalType and optionally defines the software, standard or specification, or algorithm to be used to determine the array of measured values.
<xs:complexType name="SubgroupDecimalsType"><xs:annotation><xs:documentation>The SubgroupDecimalsType defines a list of SubgroupDecimalType and optionally defines the software, standard or specification, or algorithm to be used to determine the array of measured values.</xs:documentation></xs:annotation><xs:complexContent><xs:extension base="StatsWithReferenceBaseType"><xs:sequence><xs:element name="Values" type="SubgroupDecimalArrayType"><xs:annotation><xs:documentation>The Values element is the array of measured values associated with subgroup ids.</xs:documentation></xs:annotation></xs:element></xs:sequence></xs:extension></xs:complexContent></xs:complexType>