Quartiles
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Description
Quartiles divide a set of observations into four equal parts. 25 percent of the observations are less than the first quartile, 50 percent are less than the second quartile, and 75 percent are less than the third quartile.
The interquartile range is the difference between the third quartile and the first quartile.
Concept Prerequisite
Wikipedia Reference
http://en.wikipedia.org/wiki/Quartiles
Learning Material
Covered in Topic(s)
| Descriptive Statistics (Measures of Central Tendency and Dispersion) |