confidence 

specifies the degree of statistical confidence (between zero and one) that
a value falls within the range specified by min and max, or the proportion of observed
values that fall within that range.

Attribute Information

Used By

Attribute Group tei:att.ranging.attribute.confidence

Source 

<xs:attribute name="confidence" type="xs:double">
  <xs:annotation>
    <xs:documentation>specifies the degree of statistical confidence (between zero and one) that a value falls within the range specified by min and max, or the proportion of observed values that fall within that range.</xs:documentation>
  </xs:annotation>
</xs:attribute>

Sample