8, 18, 10,14, 18, 11, 13, 14, 13, 17, 15, 8, 16, and 13 The
MATHEMATICS
WAEC 2019
8, 18, 10,14, 18, 11, 13, 14, 13, 17, 15, 8, 16, and 13
The following are scores obtained by some students in a test. How many students scored above the mean score?
- A. 10
- B. 9
- C. 8
- D. 7
Correct Answer: D. 7
Explanation
Mean = \(\frac{8 + 18 + 10 + 14 + 18 + 11 + 13 + 14 + 13 + 17 + 15 + 8 + 16 + 13}{14}\)
Mean = \(\frac{188}{14}\)
Mean = 13.4
Number above the mean is 7
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *