What the tool does, how to run it, and what to expect from the result.
Multiply each value by its weight, add the products, and divide by the sum of the weights. Grades 85, 90 and 78 on courses worth 3, 3 and 4 credits: (255 + 270 + 312) ÷ 10 = 83.7. The plain average, 84.33, is higher because it ignores that the 78 carries the most weight. Weights can be credits, quantities or percentages.
A quick way to understand who this helps, what it solves, and where it connects next.
Students, teachers, analysts and researchers working with data.
Using the weighted average calculator without installing anything or signing up.
Short answers for the questions people usually have before trying a utility like this.
No. The formula divides by their sum, so 3, 3, 4 and 30%, 30%, 40% give the same answer.
=SUMPRODUCT(values, weights) / SUM(weights).
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| Value | Weight | Value × weight |
|---|---|---|
| 85 | 3 | 255 |
| 90 | 3 | 270 |
| 78 | 4 | 312 |