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quartile
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Quartile
In descriptive statistics, the quartiles of a ranked set of data values are the three points that divide the data set into four equal groups, each group comprising a quarter of the data. A quartile is a type of quantile. The first quartile (Q1) is defined as the middle number between the smallest number and the median of the data set. The second quartile (Q2) is the median of the data. The third quartile (Q3) is the middle value between the median and the highest value of the data set.
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| WordNet 2.0 | Download this dictionary |
quartile
Noun
1. (statistics) any of three points that divide an ordered distribution into four parts each containing one quarter of the scores
(hypernym) mark, grade, score
(classification) statistics
| Babylon Italian-English | Download this dictionary |
quartile
nm.
quartile
| Webster's Revised Unabridged Dictionary (1913) | Download this dictionary |
Quartile
(n.)
Same as Quadrate.
Same as Quadrate.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
| Electronic Statistics Textbook | Download this dictionary |
Quartiles
The lower and upper quartiles (this term was first used by Galton, 1882; also referred to as the .25 and .75 quantiles ) are the 25th and 75th percentiles of the distribution (respectively). The 25th percentile of a variable is a value such that 25% of the values of the variable fall below that value.
Similarly, the 75th percentile is a value such that 75% of the values of the variable fall below that value and is calculated accordingly.
Similarly, the 75th percentile is a value such that 75% of the values of the variable fall below that value and is calculated accordingly.
