A weighted average is a calculation that takes into account the relative importance of different values. Unlike a simple average, where all values contribute equally, a weighted average assigns different weights to each value based on its significance. This method is often used in scenarios like calculating grades, where some assignments may be more important than others. For example, if a student has two test scores, one worth 70% and the other worth 30%, the weighted average would reflect this distribution. To find it, you multiply each score by its weight, sum the results, and then divide by the total of the weights. This provides a more accurate representation of the overall performance.