Measures of Central Tendency
Measures of central tendency attempt to capture a set of values in a single statistic. The term central tendency means that the values tend to cluster around a central value. In any given situation, the values may or may not tend to cluster around a central value. But the measures of central tendency can still be calculated and compared. As you will see, in comparing them, you can learn a bit about how much the values tend to cluster.
The three key measures of central tendency are the mean, the median, and the mode.
The mean is just a fancy word for the average. It is calculated by adding up each value and dividing by the number of values. For example, here are the hourly salaries of five consultants ...