The arithmetic mean of 5, 8, 10, 15, 24 and 28 is?

A. 145
B. 15
C. 90
D. 6

Correct Answer: Option B

Explanation

Arithmetic Mean = ∑X
N
where N = Number of observation and X is observations
Therefore;

5 + 8 + 10 + 15 + 24 + 28
6

= 90
6

= 15