interquartile range


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interquartile range

[¦in·tər′kwȯr‚tīl ‚rānj]
(statistics)
The distance between the top of the lower quartile and the bottom of the upper quartile of a distribution.
References in periodicals archive ?
Since 1980, the interquartile range of long-run MPKs has narrowed somewhat, indicating a convergence in long-run MPKs across the globe.
The interquartile range for early pruned treatment was EL Stage 38 (50% veraison) to EL Stage 40 (80% veraison).
Table 1: Showing differences in mean (with standard deviation) and medians with interquartile range of the Johnsen score between control and experimental groups.
To arrive at the interquartile range, the data first must be sorted from low to high values (or vice versa).
6 ([dagger][double dagger][section]) Median 1 Interquartile Range 0-2 Rehabilitation Mean 0.
IQR = interquartile range, CI = confidence interval, CABG = coronary artery bypass grafting, MCH = mean corpuscular haemoglobin, MCV = mean corpuscular volume.
In particular, the median represents the value which separates the upper half of the distribution from the lower half and the interquartile range the distributions of the points - the larger is the IQR the more dispersed are the data.
Interquartile range increases in pollutant concentrations were consistently associated with statistically significant increases in fibrinogen, von Willebrand factor, heart rate, sCD62P, and SCD40L concentrations," they said.
Non-normally distributed continuous variables are presented using median and interquartile range (IQR) and compared using Wilcoxon rank-sum (Mann-Whitney) test.
Supplementing the interquartile range was the standard deviation which, taken together, provided support for determining the level of consensus.