- Arrange the data in ascending order
- the sum of all data divided by the number of data
- with an outlier the mean is less accurate "average"

1,2,3,4,5

1+2+3+4+5 = 15

15 divided by 5 equals 3

3 is the Mean

- Arrange the data in ascending order Find the middle number
- If there are 2 middle numbers you have to find the mean of them
- Great to use if there is an outlier

1,2,3,4,5

1 , 5

2 , 4

3

3 is the median

- Arrange data in ascending order Find the data that occurs the most
- You can have more than one mode
- You can have no mode

1,2,4,4,5

4 appears the most

4 is the Mode

- Arrange data in ascending order
- Subtract the smallest number from the largest
- Large=Outlier

1,2,3,4,5

1 is the smallest

5 is the largest

1 - 5 = 4

4 is the range

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