Deletion of Correlation coefficient

Comment: This is a  for which the conversion to a broad concept article was initiated, but expert attention is needed to carry it through to a proper article. Since this is a subtopic of Correlation and dependence, and is mentioned in that article, I see no reason that this content should not be merged there until it is further developed
Stance: merge
Cited policy: Wikipedia:Disambiguation (WP:DABCONCEPT)