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→Maths restored: new section
Okay, Tory, you take it from here. :-) --[[User:Ed Poor|Ed Poor]] <sup>[[User talk:Ed Poor|Talk]]</sup> 16:22, 13 October 2007 (EDT)
Okay, Tory, you take it from here. :-) --[[User:Ed Poor|Ed Poor]] <sup>[[User talk:Ed Poor|Talk]]</sup> 16:22, 13 October 2007 (EDT)
== Maths restored ==
I've restored the mathematical section, which is useful for those who want to know the maths. I've also done some general tidying and clarification. Note that the definition that a correlation is only valid if the two variables are ratio variables is too strict; they only need to be continuous variables. [[User:HSpalding|HSpalding]] 16:57, 5 January 2009 (EST)