Collect the sample values
Find the sample mean
Subtract the mean from each sample value
Square each difference
Add all squared differences
Divide the sum by n – 1
Use the formula: s² = Σ(xᵢ – x̄)² / (n – 1)
Collect the sample values
Find the sample mean
Subtract the mean from each sample value
Square each difference
Add all squared differences
Divide the sum by n – 1
Use the formula: s² = Σ(xᵢ – x̄)² / (n – 1)