Answer: 16
Step-by-step explanation:
For a data set, the arithmetic mean is the central value of a discrete set of numbers, it is the sum of the values divided by the number of values.
In this case, the values are the number of visits to the website and the number of values is 7 (number of days considered).
[tex]\frac{12+16+0+8+31+28+17}{7}=\frac{112}{7}=16[/tex]
So the mean or average value of visits to the website during this week was 16.
