Question

What is the average for a student who received grades of 85, 76 and 82 on 3 mid term tests
and a 79 on the final examination, if the final examination counts 3 times as much as each of
the three tests?
(a)
(b) 80
81
(c)
80.5
(d)
None of these

Answer 1

Step-by-step explanation:

2 times total..

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Answer 2

Answer:

the answer is 80

1. according to ungroup farmula of mean

Step-by-step explanation:

1. the farmula is EfX/Ef
2. where E is summation
3. wher frequency total is 6
4. 85 have frequency 1
5. 76 have 1
6. 82 have 1
7. 79 have 3
8. EfX is equal to 480
9. Ef is equal to 6
10. put the values and get the answer