4.1.7Correlation CoefficientAtualizado 2020-02-26 Leitura 1 minResumoMede a correlacao linear entre y e y_hat.Valores perto de 1 indicam forte correlacao positiva.Definicao #$$ r = \frac{\sum (y_i - \bar{y})(\hat{y}_i - \overline{\hat{y}})}{\sqrt{\sum (y_i - \bar{y})^2}\sqrt{\sum (\hat{y}_i - \overline{\hat{y}})^2}} $$