MSE

168. MSE

Average of squared differences between predicted ( ${\hat{𝑦}}_{𝑖}$ ) and actual ( $𝑦_{𝑖}$ ) values

MSE = \frac{1}{2} \sum_{𝑖 = 1}^{𝑛} (𝑦_{𝑖} - {\hat{𝑦}}_{𝑖})