Name and define three measures of central tendency. Give their formulas and an example of application.

1. The mean is the most common measure of central tendency. It simply the sum of the numbers divided by the number of numbers. The symbol m is used for the mean of a population. The symbol M is used for the mean of a sample.

The formula for M is:

M = σX/N

where σX is the sum of all the numbers in the sample and

N is the number of numbers in the sample.

Example: The mean of 7, 12, 24, 20, 19 is (7 + 12 + 24 + 20 + …

The solution names and defines three measures of central tendency.