Nikki's Measures of Central Tendancy

Sunday, September 28, 2008
Mean

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



- arrange in ascending order
- find the data in the middle
- if there are 2 middle numbers you fing the mean of them
- great to use if there is an outlier




- arrange the data in ascending order
- the number that appears most in the set of data
- you can have no mode
- you can have more than one mode

Range

- arrange the data in ascending order
- subtract the smallest data from the largest data
- large range= outlier
Here is a video I found on mean, median and mode.

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