# Quartile

- A statistical term describing a division of observations into four defined intervals based upon the values of the data and how they compare to the entire set of observations.
Each quartile contains 25% of the total observations. Generally, the data is ordered from smallest to largest with those observations falling below 25% of all the data analyzed allocated within the 1st quartile, observations falling between 25.1% and 50% and allocated in the 2nd quartile, then the observations falling between 51% and 75% allocated in the 3rd quartile, and finally the remaining observations allocated in the 4th quartile.

Try not to confuse a quarter with a quartile.

*Investment dictionary.
Academic.
2012.*

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**quartile**— [ kwartil ] n. m. • 1951; mot angl. (1879); quartil adj. 1557 astron.; lat. médiév. quartilis, de quartus « quatrième » ♦ Statist. 1 ♦ Chacune des trois valeurs de la variable au dessous desquelles se classent 1/4, 1/2, 3/4 des éléments d une… … Encyclopédie Universelle**quartile**— quar‧tile [ˈkwɔːtaɪl ǁ ˈkwɔːr ] noun [countable] STATISTICS one quarter of a set of things or people, arranged in order of value, amount, wealth etc: • the three funds in the top quartile of their sectors see also decile, median, percentile * * * … Financial and business terms**Quartile**— Quar tile, n. [F. quartile aspect, fr. L. quartus the fourth. See {Quart}.] (Astrol.) Same as {Quadrate}. [1913 Webster] … The Collaborative International Dictionary of English**quartile**— mid 15c., from M.Fr. quartil, from M.L. quartilus of a quartile, from L. quartus fourth (see QUART (Cf. quart)) … Etymology dictionary**quartile**— ► NOUN Statistics ▪ each of four equal groups into which a population can be divided according to the distribution of values of a particular variable. ORIGIN Latin quartilis, from quartus fourth … English terms dictionary**quartile**— [kwôr′tīl, kwôrt′ l] n. [ML quartilis < L quartus, fourth: see QUART1] Statistics 1. any of the values in a series dividing the distribution of the individuals in the series into four groups of equal frequency 2. any of these groups … English World dictionary**Quartile**— In 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 one fourth of the sampled population. Definitions * first quartile (designated Q1) = lower… … Wikipedia**Quartile**— En statistique descriptive, un quartile est chacune des 3 valeurs qui divisent les données triées en 4 parts égales, de sorte que chaque partie représente 1/4 de l échantillon de population. Calcul des quartiles Voir à quantile pour les méthodes … Wikipédia en Français**quartile**— The argument of the cumulative distribution function corresponding to a probability of either 1/4 (first or lower quartile) or 3/4 (third or upper quartile); (of a sample) the value below which occurs a quarter (first or lower quartile) or three… … Dictionary of automotive terms**quartile**— /kwawr tuyl, til/, n. 1. Statistics. (in a frequency distribution) one of the values of a variable that divides the distribution of the variable into four groups having equal frequencies. Cf. first quartile, median, third quartile. 2. Astrol. a… … Universalium