quartile


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quartile

 [kwor´tīl]
any of the three values that divide the range of a probability distribution into four parts of equal probability; the first, second, and third quartiles are the 25th, 50th, and 75th percentiles.

quartile

[kwôr′təl, kwôr′tīl]
Etymology: L, quartus, fourth
one-fourth of the distribution of scores. The first quartile would be the lowest 25% of scores, the second quartile would represent the 26% to 50% range of scores, and so on.

quartile

feature of descriptive statistics; area of a graph representing upper/lower 25% of particular population/cohort

quartile

one of the values establishing the division of a series of variables into fourths, or the range of items included in such a segment.
References in periodicals archive ?
Among those who had their experience with care measured in both round 2 and round 4 (N = 26,260), 55 percent were in a different quartile in round 4, demonstrating the time-varying nature of a patient's experiences with care.
We observed a similar pattern in the present study, but only among men in the highest exposed quartile, and the associations in the present study were not statistically significant (p = 0.
If we take the second largest quartile as per 1989 share, then all the five states viz.
Organizations that were below the top quartile in 2007, in contrast, followed the same downward trend as their competition during the recession.
Among bidders with experience, the first quartile includes bidders with a feedback rating of 1 or 2.
However, among African-Americans, those in the highest quartile of waist-to-hip circumference had a marginally significant odds ratio of 3.
To determine the differences in graft survival rates between high and low income ineligibles, we constructed Kaplan-Meier survival curves for each ineligible income quartile (Figure 1).
the fund has been consistently ranked first quartile and is placed 3 out of 100 funds in the sector*.
Compared with women in the lowest intake quartiles, those in the highest quartile of total lignan intake (>1395 microg/day) had a reduced risk of breast cancer, as did those in the highest quartile of lariciresinol intake.
Ratio is calculated by comparing lowest quartile household incomes with the lowest quartile house prices in wards.
Half our sample came from the top quartile of their high school graduating class.