Determine the mean score of the student that took the mathematics test?

A.
4.5 
B.
4.3 
C.
4.2 
D.
4.6
Correct Answer: Option C
Explanation
(3 x 0) + (1 x 2) + (5 x 2) + (5 x 3) + (5 x 4) +
(10 x 5) + (4 x 6) + (3 x 7) + (1 x 8) + (2 x 9) (div) 40
= (frac{168}{40}) = 4.2
There is an explanation video available below.