Finding Mean, Median, Mode, and Range

"Mean" is another word for the average. To Find the mean of a set of data, you add up all the numbers and then divide by the number of data.

2+7+9=18

18/(number of data)

18/3=6

Note that the mean isn't always a value from the original list.

The "median" is the middle value in the list of numbers. To find the median, your numbers have to be listed in numerical order, so you may have to rewrite your list first.

What if there are two numbers in the middle? How do you find the median?

The "mode" is the value that occurs most often. If no number is repeated, then there is no mode for the list.

The "range" is just the difference between the largest and smallest values.