Sxx Variance Formula 💫 💯

s² = (1/(n-1)) * Σ(xi - x̄)²

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

For a sample of data, we use the sample mean (x̄) as an estimate of the population mean (μ). The sample variance (s²) is calculated as: Sxx Variance Formula