Weighted Mean

Authors
Affiliations

Doctor of Physical Therapy

B.S. in Kinesiology

Doctor of Physical Therapy

B.A. in Neuroscience

Significance

Weighted means are very common in statistics, especially when studying populations.

Calculation

Weighted mean for percentages

  • Exam 1: 15 % of your grade
  • Exam 2: 40 % of your grade
  • Exam 3: 45 % of your grade

Exam grades:

  • Exam 1 Grade: 80%
  • Exam 2 Grade: 90%
  • Exam 3 Grade: 100%

What is your final weighted average for the class?

Step 1: Multiply the numbers in your data set by the weight

Weight of an exam=Exam Weight×Exam Grade

Weight of Exam 1=(0.15)×(0.80)

Citation

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