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Related to Quartiles: percentiles


 (kwôr′tīl′, -tĭl)
n. Statistics
1. Any of the groups that result when a frequency distribution is divided into four groups of equal size.
2. Any of the values that separate each of these groups.

[Middle English, 90 degrees apart (of the relative position of two celestial bodies), from Old French quartil, from Medieval Latin quārtīlis, of a quartile, from Latin quārtus, fourth; see quart.]


1. (Statistics) statistics one of three actual or notional values of a variable dividing its distribution into four groups with equal frequencies
2. a quarter part of a distribution
3. (Statistics) statistics denoting or relating to a quartile
4. (Astrology) astrology denoting an aspect of two heavenly bodies when their longitudes differ by 90°
[C16: from Medieval Latin quartīlis, from Latin quartus fourth]


(ˈkwɔr taɪl, -tɪl)

(in a frequency distribution) one of the values of a variable that divides the distribution of the variable into four groups having equal frequencies.
[1875–80; « Latin quārt(us)]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.quartile - (statistics) any of three points that divide an ordered distribution into four parts each containing one quarter of the scores
mark, score, grade - a number or letter indicating quality (especially of a student's performance); "she made good marks in algebra"; "grade A milk"; "what was your score on your homework?"
statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters


[ˈkwɔːtaɪl] Ncuartil m


[ˈkwɔːtaɪl] nquartile m
References in periodicals archive ?
5] values in the third and fourth quartiles had higher SBP than participants in the lowest quartile of P[M.
From 2004 to 2007, the share of mortgage balances held by investors in the middle quartiles of the credit score distribution rose from 20% to 35%.
When the 310 children with ASDs were compared with 1,240 control participants, the risk of ASDs was significantly increased in each of the three lower quartiles of Vitamin D level at birth, when compared with the highest quartile - an increased risk of ASDs by 260 per cent in the lowest quartile, 150 per cent in the second quartile, and 90 per cent in the third quartile.
For purposes of this secondary analysis, participants were divided into quartiles according to baseline age: Quartile 1 patients were up to 54 years old; quartile 2 were ages 55-60; quartile 3 were ages 61-67; and quartile 4 were ages 68 and up.
Investigators stratified patients who met National Cholesterol Education Program Adult Treatment Panel III (NCEP ATP III) criteria for metabolic syndrome into risk quartiles for progression to diabetes using a model they developed based on 7 parameters: fasting plasma glucose, hemoglobin Ale, history of high blood glucose, waist:hip ratio, waist circumference, triglycerides, and height (TABLE (1)).
The nonparametric Mann-Whitney U-test was used for comparison between 2 groups and the Kruskal--Wallis test was used to compare baseline characteristics and outcomes across the different quartiles of hs-cTnI.
2012), that measure was then recoded into quartiles to indicate four different levels of care experience, ranging from quartile 1 (i.
Women with higher binding inhibitory capacity at delivery were less likely to deliver LBW babies (odds ratio <1 for all quartiles in comparison to first quartile; p = 0.
Who travels and where they end up From black communities 44% of students travel elsewhere Mixed (White/Latino) 38% travel White 32% travel Latino 28% travel Note: School quartiles are based on 2014 state test scores Source: Chicago Public Schools, U15.
A sodium intake in the second and third quartiles increased cardiovascular disease risk 1.
2000; Miller & Geraci, 2011), and in order to more directly examine the lower and higher performing students in the sample, the data from the remaining participants (N=109) were divided into Quartiles on the basis of actual exam performance.
The second and third quartiles had average post-65 to pre-65 income ratios of 100.