Other Definitions
quartile (dict)
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QuartileIn descriptive statistics, a quartile is any of the three values which divide the sorted data set into four equal parts, so that each part represents 1/4th of the sample or population. Thus: - first quartile = lower quartile = cuts off lowest 25% of data = 25th percentile
- second quartile = median = cuts data set in half = 50th percentile
- third quartile = upper quartile = cuts off highest 25% of data, or lowest 75% = 75th percentile
The difference between the upper and lower quartiles is called the interquartile range. Calculating quartiles See Quantile for methods. The quartile is calculated as the 4-quantile. See also External links
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