Jessica's Measures Of Central Tendancy

Monday, September 29, 2008
Mean - Arrange the set of data in ascending order. Then add up all the numbers and divide the answer by the number of numbers.









http://www.mathsisfun.com/mean.html

Median - Arrange the set of data in ascending order. The number in the middle is the median. If there is two numbers in the middle, add them and then divide them by two.










http://www.mathsisfun.com/median.html

Mode - Arrange the set of data in ascending order. The number that shows up the most is te mode. There can be no mode if each of the numbers only appears once.













http://www.mathsisfun.com/mode.html





Range - Arrange the set of data in ascending order. Subtracting the smallest number from the biggest number gives you the range.








http://www.mathgoodies.com/lessons/vol8/range.html



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