Weighted Average Calculator

Easily calculate weighted averages for your datasets.

Input Values

Enter your dataset and corresponding weights as comma-separated values.

Data Set

Weights

Weighted Average:

Visualization

Understanding Weighted Average

Weighted average is a type of average where each data point is multiplied by a weight, which reflects its importance. It's different from a simple average where all data points contribute equally. The formula for weighted average is:

$$ \text{Weighted Average} = \frac{\sum (\text{Data Value} \times \text{Weight})}{\sum \text{Weight}} $$

For example, in academic grading, different assignments might have different weights. A final exam usually carries more weight than a homework assignment. Similarly, in finance, portfolio returns are often calculated as a weighted average of individual asset returns, with weights being the proportion of investment in each asset.

Use this calculator to quickly find the weighted average by entering your dataset and their corresponding weights. Ensure that the number of data values and weights are the same for accurate calculation.

Learn more about weighted average on resources like: Wikipedia, Investopedia.