Weighted Mean Calculator
Calculate the weighted mean (weighted average) of a set of values with their corresponding weights. Useful for grade calculations, statistics, and data analysis.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Weighted Mean Calculator
- Enter Values: In the first field, type your numbers separated by commas (e.g.,
85, 90, 78). - Enter Weights: In the second field, type the corresponding weights separated by commas (e.g.,
0.2, 0.5, 0.3). The number of weights must match the number of values. - Calculate: Click the Calculate Weighted Mean button.
- Read the Result: The weighted mean is displayed along with the formula and step-by-step calculation.
Important: Weights can be any positive numbers (e.g., percentages, decimals, or raw counts). The sum of weights must not be zero. All inputs must be valid numbers.
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Frequently Asked Questions
A weighted mean is an average where each value is multiplied by a weight reflecting its importance, then divided by the sum of weights.
Enter your values and corresponding weights separated by commas, then click 'Calculate Weighted Mean'. The result will show with a step-by-step breakdown.
Yes, you can use percentages (e.g., 20, 50, 30) as long as they sum to 100. The calculator handles any numeric weights.
