The marks obtained by 10 students in a test are as follows: 3, 7, 6, 2, 8, 5, 9, 1, 4 and 10. Find the mean mark.
-
A.
4.50 -
B.
5.50 -
C.
6.50 -
D.
6.75
Correct Answer: Option B
Explanation
Mean (bar{x}) = (frac{3 + 7 + 6 + 2 + 8 + 5 + 9 + 1 + 4 + 10}{10} )
= (frac{55}{10} = 5.50)