What is the mean of the set {4, 5, 6, 8}?

To find the mean of a set of numbers, you add all the numbers together and then divide by the number of items in the set.

In this case, the numbers are 4, 5, 6, and 8. First, you would sum these values:

4 + 5 + 6 + 8 = 23.

Next, you need to determine how many numbers are in the set. There are four numbers in total. Now, you divide the total sum by the number of values:

23 ÷ 4 = 5.75.

Thus, the mean of the set {4, 5, 6, 8} is 5.75, making that the correct answer. Understanding the process of calculating the mean is essential for performing well in statistics and data analysis.