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
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
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
Source: WAEC / JAMB / NECO Classroom Archive (Record #57395)