What is the mean in math

The mean, also known as the average, is a measure of central tendency in mathematics. It is calculated by adding up a set of numbers and then dividing by the total number of numbers in the set. The formula for finding the mean is:

Mean = (sum of all numbers) / (total number of numbers)

For example, if you have the set of numbers {1, 3, 5, 7, 9}, the sum of all the numbers is 25. There are a total of 5 numbers in the set, so the mean would be:

Mean = 25 / 5 = 5

Therefore, the mean of the set {1, 3, 5, 7, 9} is 5.