variance

covariance

$ r = \frac{Cov[X, Y]}{\sqrt{Var[X] Var[Y]}} $

$ r = \frac{SP}{\sqrt{SS_{X} SS_{Y}} $

regression line, $ \widehat{Y} = a + bX $

SS of Regression vs. SS of residual, $ SS_{total} = SS_{Y} = SS_{reg} + SS_{res}$

R², $ R^2 = \frac{SS_{reg}}{SS_{total}}$

F-test, $ F = \frac{MS_{reg}}{MS_{res}} $