Measures of Variability : Range
If we are given a list of data find the largest and smallest number and subtract them.
14, 15, 13, 11, 17, 12, 18
18 - 11 = 7
If you are given a stem and leaf plot:
key 2|3 = 23
57 - 23 = 34
If you are given a box and whisker plot:
Min Max
Max - Min = 31 - 14 = 17
Quickly sum it up: Regardless of the way the data is given the range is the largest number minus the smallest number.
Related Links: Math algebra Parts of An Expression Positive and Negative Integer Exponents |
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