MathATube.com

Mean, Median, Mode, and Range

**The mean**

The mean is the same as the average. Add up the series of numbers

and divide by the number of numbers in the list.

Example: Find the mean of 4, 6, 10, 4.

Step 1: Add all the numbers = 24

Step 2: dividing 24 by the number of numbers in the list. 24÷4=6

the mean or average of 4, 6, 10, 4 is 6

The median

The "median" is the "middle" value in the list of numbers. To find the median,

your numbers have to be listed in numerical order,(from least to greatest) so you may

have to rewrite your list first.

Example : A student has gotten the following grades on his tests: 60, 70, 80, 90, and 100

The median grade is 80

**The mode**

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

then there is no mode for the list. Find the mode of 4,6,4 and 10

Example . First you list the numbers in order . 4, 4, 6, 10

Then you look to see which number repeats the most .

4 repeats twice, which means it's the mode is 4.

**The Range**

The range of a set of data(numbers) is the difference between the

highest and lowest values in the set.

Example: find the range of 4, 6, 4, 10

step-1 Arrange the numbers in order by size 4, 4, 6, 10

step-2 Subtract the smallest number from the largest number. 10- 4 = 6

6 is the Range