1. Mean, Median, Mode, and Range
Pre-Algebra
By: Nicole Poinsett

2. Mean Definition: average of a set of numbers
To find: add all numbers together and divide by the number of numbers you have
Example: 4, 2, 6, 1, 2
= 15
15/5= 3
The mean is 3.

3. Median
Definition: middle number of a set of numbers when numbers are placed in order
To find: place numbers in order from least to greatest and then find the number in the middle. If there is an even number of numbers find the average of the two numbers in the middle
Example: 4, 2, 5, 1, 2
The median is 2.

4. Mode Definition: number that occurs the most
To find: find the number that occurs more than the others, there can be more than one or none at all
Example: 4, 2, 6, 1, 2
The mode is 2.

5. Range Definition: difference between the largest and smallest number
To find: subtract the largest and the smallest number
Example: 4, 2, 6, 1, 2
6-1= 5
The range is 5.

6. Problems Find mean, median, mode, and range: 8, 3, 4, 3, 7
7, 2, 1, 5, 1, 2
5, 6, 2, 1, 7
3, 4, 5, 8, 1, 5
7, 5, 8

7. Answers Mean Median Mode Range 1 5 4 3 2 1 and 2 6 4.2 None 4.3 4.5 7
6.7