<?xml version="1.0" encoding="UTF-8"?>

<xs:schema 
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  xmlns="http://www.w3.org/1998/Math/MathML"
  targetNamespace="http://www.w3.org/1998/Math/MathML"
  elementFormDefault="qualified">

<xs:annotation>
  <xs:documentation>
  This is an XML Schema module for the statistical operators of content MathML.
  Author: St&#233;phane Dalmas, INRIA.
  </xs:documentation>
</xs:annotation>

<!-- "mean" -->

<xs:attributeGroup name="mean.attlist">
  <xs:attributeGroup ref="Definition.attrib"/>
  <xs:attributeGroup ref="Common.attrib"/>
</xs:attributeGroup>

<xs:complexType name="mean.type">
  <xs:attributeGroup ref="mean.attlist"/>
</xs:complexType>

<xs:element name="mean" type="mean.type"/>

<!-- "sdev" -->

<xs:attributeGroup name="sdev.attlist">
  <xs:attributeGroup ref="Definition.attrib"/>
  <xs:attributeGroup ref="Common.attrib"/>
</xs:attributeGroup>

<xs:complexType name="sdev.type">
  <xs:attributeGroup ref="sdev.attlist"/>
</xs:complexType>

<xs:element name="sdev" type="sdev.type"/>

<!-- "variance" -->

<xs:attributeGroup name="variance.attlist">
  <xs:attributeGroup ref="Definition.attrib"/>
  <xs:attributeGroup ref="Common.attrib"/>
</xs:attributeGroup>

<xs:complexType name="variance.type">
  <xs:attributeGroup ref="variance.attlist"/>
</xs:complexType>

<xs:element name="variance" type="variance.type"/>

<!-- "median" -->

<xs:attributeGroup name="median.attlist">
  <xs:attributeGroup ref="Definition.attrib"/>
  <xs:attributeGroup ref="Common.attrib"/>
</xs:attributeGroup>

<xs:complexType name="median.type">
  <xs:attributeGroup ref="median.attlist"/>
</xs:complexType>

<xs:element name="median" type="median.type"/>

<!-- "mode" -->

<xs:attributeGroup name="mode.attlist">
  <xs:attributeGroup ref="Definition.attrib"/>
  <xs:attributeGroup ref="Common.attrib"/>
</xs:attributeGroup>

<xs:complexType name="mode.type">
  <xs:attributeGroup ref="mode.attlist"/>
</xs:complexType>

<xs:element name="mode" type="mode.type"/>

<!-- "moment" -->

<xs:attributeGroup name="moment.attlist">
  <xs:attributeGroup ref="Definition.attrib"/>
  <xs:attributeGroup ref="Common.attrib"/>
</xs:attributeGroup>

<xs:complexType name="moment.type">
  <xs:attributeGroup ref="moment.attlist"/>
</xs:complexType>

<xs:element name="moment" type="moment.type"/>

<!-- "momentabout" -->

<xs:attributeGroup name="momentabout.attlist">
  <xs:attributeGroup ref="Definition.attrib"/>
  <xs:attributeGroup ref="Common.attrib"/>
</xs:attributeGroup>

<xs:group name="momentabout.content">
  <xs:sequence>
    <xs:group ref="Content-expr.class"/>
  </xs:sequence>
</xs:group>

<xs:complexType name="momentabout.type">
  <xs:group ref="momentabout.content"  minOccurs="1" maxOccurs="unbounded"/>
  <xs:attributeGroup ref="momentabout.attlist"/>
</xs:complexType>

<xs:element name="momentabout" type="momentabout.type"/>

<!-- And the group of everything -->

<xs:group name="Content-statistics.class">
  <xs:choice>
    <xs:element ref="mean"/>
    <xs:element ref="sdev"/>
    <xs:element ref="variance"/>
    <xs:element ref="median"/>
    <xs:element ref="mode"/>
    <xs:element ref="moment"/>
    <xs:element ref="momentabout"/>
  </xs:choice>
</xs:group>


</xs:schema>
<!--
  Copyright &#251; 2002 World Wide Web Consortium, (Massachusetts Institute
  of Technology, Institut National de Recherche en Informatique et en
  Automatique, Keio University). All Rights Reserved. See
  http://www.w3.org/Consortium/Legal/.
  -->
