How it works
The arithmetic mean is sum ÷ count. The weighted mean is Σ(value × weight) ÷ Σ(weights). Shows the fraction layout as you type.
mean = sum / count · weighted = Σ(x w) / Σw
When to use
Use this tool when you need to: try 10, 2, 38, 23, 38, 23, 21 for the classic example, or switch to Weighted for credit-hour style scores.
How to use this tool
- Enter your values in the fields above.
- Review the formula and any mode options for your problem.
- Read the result and the step-by-step solution.
Try 10, 2, 38, 23, 38, 23, 21 for the classic example, or switch to Weighted for credit-hour style scores.
Frequently asked questions
- What is the Average Calculator?
- The arithmetic mean is sum ÷ count. The weighted mean is Σ(value × weight) ÷ Σ(weights). Shows the fraction layout as you type.
- How do I use the Average Calculator?
- Enter the required values, then calculate. The Average Calculator shows results, formulas, and step-by-step work when available. No account is required.
- What formula does the Average Calculator use?
- mean = sum / count · weighted = Σ(x w) / Σw
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