Q: What is the difference between Sxx and Syy? A: Sxx and Syy are both sum of squares formulas, but Sxx represents the sum of squared deviations from the mean of x, while Syy represents the sum of squared deviations from the mean of y.
Let's calculate $S_xx$ for a simple dataset: Sxx Variance Formula
[ \boxeds^2_x = \frac\sum (x_i - \barx)^2n-1 = \fracS_xxn-1 ] Q: What is the difference between Sxx and Syy
Also, the uses Sxx: