To find the mean, add up all the test scores and divide by the number of tests:
524/10 = 52.4.
I’m not sure if this is correct but here is a picture of what I think the answer might be. P.S my handwriting is not neat
Answer:
1. b.
2. a.
3. b.
4. d.
5. a.
6. b.
7. c.
8. b.
9. b.
10. c.
11. a.
12. b.
13. a.
14. c.
Step-by-step explanation:
7 + 3 = 10
+ 679 - 2056 = -1377
- 398 + 1 = -397
-23 - 237 = 260
2 - 6 = -4
-2 × 3 × -4 = 24
absolute value of -36 = 36
6 + 4 = 10
- 5928 - 965 = -6893
215 × 212 + 212 × 314 = 112148
(15 + 5) ÷ (15 + 5) = 20 ÷ 20 = 1
-457 + 1 = -456
- 218 -1 = -219
Answer:
Her answer is not reasonable. Her average is 83.
Step-by-step explanation:
Add all of her test grades together (96+82+78+76=332)
To find the average, you need to add all test grades she got and then divide the sum by the total number of numbers added (in this case, we added 4 tests together, so we need to divide by 4)

So she added wrong and forgot to divide by the total number of tests.
Answer:0.013
Step-by-step explanation: