Average

The average provides a measure of the “central tendency” or “typical value” of a list of numbers. To calculate the average of a list of numbers, add together all the numbers, then divide by the count of numbers.

For example, consider the list of numbers , , , , . The average of this list is calculated by adding up all the numbers and then dividing by the count of numbers in the set like so:

So the average of the list , , , , is equal to .

Median

The median of a data set is the middle value of the sorted data.

Mode

The mode of a data set is the most commonly occurring value in the data set.