Weighted Average Calculator
Calculate the average of a list of values where some values contribute more than others. Useful for grades, portfolio returns, and inventory.
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Applications
Essential for students calculating final grades from syllabus weights, investors tracking portfolio performance, and businesses determining the cost of inventory.
The Formula
A weighted average multiplies each value by its corresponding weight, sums those products together, and then divides by the total sum of all the weights.
Fun Fact: Weighted averages are used in creating major stock market indices, such as the S&P 500, where larger companies have a greater impact on the index's performance.
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