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## On a test, the marks for ten students are: 2 students, 85%; 4 students, 78%; 3 students, 66%; and 1 student, 92%. What is the average

Question

On a test, the marks for ten students are: 2 students, 85%; 4 students, 78%; 3

students, 66%; and 1 student, 92%. What is the average mark on the test? (Exact

Answer)

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Mathematics
3 years
2021-08-24T14:15:07+00:00
2021-08-24T14:15:07+00:00 1 Answers
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## Answers ( )

Answer:77.2%

Step-by-step explanation:The average formula is:

Let’s first find the sum of all the numbers (remember sum means to add):

(2)(85) + (4)(78) + (3)(66) + 92 = ?

170 + 312 + 198 + 92 = 772

There are marks for 10 students so that is what goes at the bottom (10 students, 10 test scores)

Plug both things into the equation:

Therefore, the average mark on the test was 77.2%

Hope this helps!!– Kay 🙂