Answer: 24.5
Explanation:
The definition of mean in maths is adding all the values up (25 + 26 + 21 + 29 + 22 + 24 + 27 + 24), and then dividing the final sum by the number of values there are to be added up. In this case, there are 8 values that had to be added up and the final sum was 198. In other words, it's 198/8 = 24.5