Tracy's Measures of Central Tendency

Monday, September 29, 2008
Mean
- arrange the data in ascending order
- the sum of numbers divided by how many numbers there are in the data
- with an outlier the mean is less accurate "average"



Median
- arrange the data in ascending order
- the middle number in a set of data
-if there are 2 middle number you find the mean of them
-great to use if there is an outlier






Mode
- arrange the data in ascending order
- most frequently used number in the data
- you can have more then one more or NO mode



Range
-Arrange data in ascending order
-Look for the greatest piece of data
-Look for the smallest piece of data
-Subtract the greatest piece of data with the smallest piece of data





Here is a video that explains MMM.

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