Ben ezberimde tutamıyorum, tutamayan herkes için buraya not:

Pearson’s r isn’t the only game in town…

Name Symbol Characteristic of Variables   Örnek
Pearson’s Product Moment r Both are continuous (interval or ratio)   Boy, Kilo Boy, Yaş
Rank Order r Both are rank (ordinal)    
Point-Biserial _r_pbis One is continuous (interval or ratio) and one is nominal with two values   Medeni Durum(Evli,Bekar), Yaş
Biserial _r_bis Both are continuous, but one has been artificially broken down into nominal values.    
Phi f Both are nominal and each has two values.   Medeni Durum (Evli, Bekar)ve Cinsiyet(E,K)
Contingency C Both are nominal and each has more than two values.    
Tetrachoric rt Both are continuous, but each has been artificially broken down into two nominal values.    
Eta h Both are continuous and are used to detect curvilinear relationships.