Calculating Weighted Average: 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.

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Answers

2016-01-03T08:59:09+08:00
85 (40%) + 100 (20%) + 92 (20%) + 84 (20%) 

In order to find the percentage, first, we must to make the rate, into decimals. So....
85 (.40) + 100 (.20) + 92 (.20) + 84 (.20) 

Now, let's multiply them then add...
85 (.40) + 100 (.20) + 92 (.20) + 84 (.20) 
      34   +       20      +     18.4   +   16.8 = 89.2

Therefore the answer to your question is 89.2.

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