Weighted Average
Weighted average from value-weight pairs. Weights must sum to more than 0.
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How to use Weighted Average
- Enter value and weight per line. Leave a field blank only when the page says the value is missing, not by typing 0 unless 0 is a real value.
- Read the result rows under the form. Errors appear in the status line. Nothing is uploaded.
- Rounding follows IEEE floating point in this browser unless the page says it uses integers or BigInt.
Weighted Average
Weighted mean
| Computes | Weighted average from value-weight pairs. Weights must sum to more than 0. |
|---|---|
| Includes | Weighted mean |
| Includes | Weight sum |
| Engine | stats |
| Upload | None |
| Advice | Arithmetic only |
What Weighted Average is
Average = Σ (value × weight) / Σ weight. Weights may be percents or fractions as long as they are consistent. Negative weights are rejected.
The formula runs in this tab. CZNull does not receive the numbers.
How this page computes
Course grades with remaining weight use final grade. Unweighted mean is average.
Entities and related jobs
Weighted average from value-weight pairs. Weights must sum to more than 0. Named features: Weighted mean, Weight sum.
See also Average Calculator, Final Grade Calculator, GPA Calculator, Median and Mode, Standard Deviation Calculator, Z-Score Calculator.
Use cases
GPA-style mixes, inventory unit costs, and survey weights.
Limits
Invalid input appears in the status line. IEEE floating point applies unless a row says otherwise. CZNull does not receive the numbers.