Meaning of CORRELATION in English
/ ˌkɒrəˈleɪʃn; NAmE ˌkɔːr-; ˌkɑːr-/ noun
[ C , U ] correlation (between A and B) | correlation (of A with B) a connection between two things in which one thing changes as the other does :
There is a direct correlation between exposure to sun and skin cancer.
the correlation of social power with wealth
mid 16th cent.: from medieval Latin correlatio(n-) , from cor- together + relatio , from referre bring back, from re- back + ferre bring.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005