Sxx Variance Formula

If you are working on a specific data set or regression model, let me know: What is your data set? Are you trying to calculate the slope or correlation?

Because x̄ is a constant, Σx̄² = n·x̄². Also, recall that Σxᵢ = n·x̄. Substituting: Sxx Variance Formula

. This version is often easier to use if you are calculating by hand with large datasets. If you are working on a specific data