Calculating Weighted Average: Method, Formula & Example


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Why would you use a weighted average instead of a traditional average calculation?

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1. A student's grade in a Psychology course is comprised of tests (40%), quizzes (20%), papers (20%), and a final project (20%). His scores for each of the categories are 85 (tests), 100 (quizzes), 92 (papers) and 84 (final project). Calculate his overall grade.

2. In a History course, a student's grade is composed of papers (40%), tests (40%) and a final exam (20%). The student has earned a 90 value on all papers and 80 value on all tests. What is the minimum score the student needs to earn on the final exam to achieve an overall grade of a B+ (87.0 before rounding)?

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About This Quiz & Worksheet

Usually in math we use a traditional average, but when the values you're averaging hold different weights, you use a weighted average. This quiz asks you to recall and calculate weighted average.

Quiz & Worksheet Goals

This weighted average quiz assesses your knowledge by having you do the following:

  • Recognize reasons to use a weighted average
  • Calculate a weighted average when given values and percentages
  • Calculate a value when given other values, percentages, and the weighted average
  • Calculate which option has a lower average price

Skills Practiced

  • Reading comprehension - draw from relevant information about weighted average found in the corresponding lesson
  • Problem solving - calculate weighted averages
  • Information recall - remember reasons to use weighted average

Additional Learning

For additional information read the corresponding lesson Calculating Weighted Average: Method, Formula & Example. The lesson covers the following objectives:

  • Define weighted average
  • Provide reasons for using a weighted average
  • Work through examples of calculating weighted average with percentages and frequencies