Difference between revisions of "Median"
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(This perhaps is what Marshall was trying to say) |
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a type of average, the data set is rearranged in numerical order and the middle value obtained, typically by counting in from either end of the sequence. If two "middle" values remain, then the ''mean'' average of these two numbers ( (x+y)/2 ) is found to give the ''median'' value of the set. | a type of average, the data set is rearranged in numerical order and the middle value obtained, typically by counting in from either end of the sequence. If two "middle" values remain, then the ''mean'' average of these two numbers ( (x+y)/2 ) is found to give the ''median'' value of the set. | ||
| − | [[category: | + | So in an example of the following numerical values: |
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| + | :2,4,5,11,13 | ||
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| + | The Median is 5, as there are 2 values to the right of the 5 and 2 values to the left. It is the middle. | ||
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| + | ==See Also== | ||
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| + | *[[Mean]] | ||
| + | *[[Mode]] | ||
| + | |||
| + | [[category:Probability and Statistics]] | ||
Revision as of 23:58, August 22, 2007
A median is the middle number in an ordered numerical sequence. if there are two middle numbers, then the median is found by averaging the numbers together.
To use a median as a type of average, the data set is rearranged in numerical order and the middle value obtained, typically by counting in from either end of the sequence. If two "middle" values remain, then the mean average of these two numbers ( (x+y)/2 ) is found to give the median value of the set.
So in an example of the following numerical values:
- 2,4,5,11,13
The Median is 5, as there are 2 values to the right of the 5 and 2 values to the left. It is the middle.