Sxx Variance Formula -

The Sxx variance formula is a part of this calculation:

Sxx = Σ(xi - x̄)²

The Sxx variance formula is a mathematical expression used to calculate the sum of squared deviations from the mean of a dataset. It is denoted by Sxx and is calculated as: Sxx Variance Formula

s² = (1/(n-1)) * Σ(xi - x̄)²

Sxx = Σ(xi - x̄)²

| Student | Score | Deviation from mean | Squared deviation | | --- | --- | --- | --- | | 1 | 80 | 0 | 0 | | 2 | 70 | -10 | 100 | | 3 | 90 | 10 | 100 | | 4 | 85 | 5 | 25 | | 5 | 75 | -5 | 25 |

x̄ = (80 + 70 + 90 + 85 + 75) / 5 = 80

Variance (σ²) = E[(xi - μ)²]