<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31308413</termId><termName>correlation</termName><termType>PT</termType><termNote><![CDATA[ Degree to which two or more attributes or measurements on the same group of elements show a tendency to vary together. ]]></termNote><termCreatedDate>2026-03-30 20:23:01</termCreatedDate><relation><relationType>BT</relationType><termId>31299793</termId><termName>statistics-related concepts</termName><termType>PT</termType></relation></term>  </Zthes>