- 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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