Calculate averages where some values carry more importance than others.
Data Entry
Enter Value followed by Weight on each line.
Calculation Results
Weighted Average3.51
Total Weight Sum10.00
Pairs Counted3
Relative Influence
Value: 4Weight: 3
Value: 3Weight: 4
Value: 3.7Weight: 3
About this calculator
Overview
Unlike a simple average, the weighted mean accounts for the relative importance of each observation. Each value is multiplied by its assigned weight before being summed and divided by the total weight of all observations.
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Pro Tips
If all weights are equal, the weighted mean is identical to the standard arithmetic mean.
Double-check that you haven't swapped the value and the weight for any entries.
Weights can be percentages, counts, or any other measure of relative importance.
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Fun Facts
"Your Grade Point Average (GPA) is a classic example of a weighted mean, where course grades are weighted by credit hours."
"The Consumer Price Index (CPI) uses a weighted mean to track inflation, giving more weight to essential goods like food and housing."
"In finance, a portfolio's return is the weighted mean of the individual asset returns, weighted by the amount invested in each."
