Excel Variance Analysis Calculator
Variance analysis in Excel is a crucial tool for understanding and managing the differences between actual and planned results. It helps identify inefficiencies, improve performance, and make data-driven decisions.
- Enter your data in the ‘Enter data’ field, separated by commas.
- Enter the mean (average) of your data in the ‘Mean’ field.
- Click ‘Calculate’.
The variance (σ²) is calculated as the average of the squared differences from the mean. The formula is:
σ² = [(x₁ – μ)² + (x₂ – μ)² + … + (xₙ – μ)²] / (n – 1)
| Data |
|---|
| 10, 12, 15, 18, 20 |
| Mean | Variance |
|---|---|
| 14.8 | 17.64 |
- Use variance analysis to identify outliers and take corrective action.
- Regularly review and update your variance analysis to ensure its accuracy and relevance.
What is the difference between variance and standard deviation?
Variance measures the spread of a dataset in terms of squared differences from the mean, while standard deviation measures the spread in terms of absolute differences from the mean.