How Do You Calculate a Weighted Average?

How Do You Calculate a Weighted Average?

Calculate the weighted average of a data set using the formula w1x1 + w2x2 + … wnxn. It involves multiplying each number by its weight and then summing up their products. You need the data values, or x, and the data value's weights, or w.

  1. Determine the data values

    Determine the value of each data in the set. These are referred to as "x" in the formula.

  2. Find the product of w and x

    Multiply each data value, x, by its weight, w.

  3. Calculate the weighted average

    Using the formula for finding a weighted average, find the sum of all the products of the numbers and their respective weights. This is the weighted average.