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The weighted average calculator lets you assign weights to each number. A number weighting is an indicator of its importance. A common type of weighted mean that is computed is the grade point average (GPA). Check our dedicated GPA calculator for more details. To do this by hand, follow these steps:
Multiply the value of the letter grade by the number of credits in the class.
Do this for all the classes and take the sum.
Divide the sum by the total number of credits.
Suppose the grades are an A for a 3 credit class, two B's for the 4 credit classes, and a C for a 2 credit class. Using the standard value of 4 for an A, 3 for a B, and 2 for a C, the grade point average is GPA = [4(3) + 3(4) + 3(4) + 2(2)]/(3 + 4 + 4 + 2) = 40/13 = 3.08
Note that the average calculator will compute the average for all values that are weighted equally, in contrast to the tools linked above. In statistics, we treat the mean as a measure of central tendency.
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