The EffectiveNumber global element is the actual number of observations used in the statistical evaluation: it is the total number of observations minus those observations excluded from the calculation and corresponds to the "EFFNUM" StatsValuesEnumType enumeration.
<xs:element name="EffectiveNumber" type="StatsNonNegativeIntegerType" substitutionGroup="CommonStatsValue"><xs:annotation><xs:documentation>The EffectiveNumber global element is the actual number of observations used in the statistical evaluation: it is the total number of observations minus those observations excluded from the calculation and corresponds to the "EFFNUM" StatsValuesEnumType enumeration.</xs:documentation></xs:annotation></xs:element>