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Topic: IQR

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	IQR (Site not responding. Last check: 2007-10-22)
		Two years ago, IQR bought the Svenljunga district heating plant, to enable it to develop biofuel, and now the expansion of the network is in full swing.
		The IQR system is unique in that it has 100% control over the sleepers, from when they are removed from the track, during transport, and until they are finally converted to energy and pure ash.
		IQR is working on some of the most current environmental issues and is currently spearheading the development of methods for dealing with waste in a responsible manner, as well as creating environmentally friendly energy.
	www.iqr.se /main/sol.html (2073 words)

	IPACT-- Products- IQR
		By using IQR, application programmers are relieved from trying to develop messaging methods between applications on the same node or multiple nodes.
		IQR services are provided that allow for the addition of user supplied routers to alternate networks.
		The IQR Router is responsible for routing messages from message queues in a particular hub to other hubs or remote nodes.
	www.ipact.com /Products/IQR.htm (1541 words)

	Inventory Reduction: Getting Results - - and Fast
		During the modeling process the IQR segments each part number into one of several performance categories which are dynamically updated based on the latest projected requirements and other data from the host system.
		The IQR is a decision support system that provides several pre-defined ways and numerous user-defined methods to view, analyze and prioritize inventory information to achieve and maintain a lower inventory investment.
		Also, the IQR is equipped with a comprehensive and very easy to use report writer which can calculate, segment, and array inventory information in ways that will contribute to optimizing inventory performance.
	www.rmdonovan.com /inventory_reduction.htm (1013 words)

	Untitled Document
		IQR is the difference between the third quartile (75th percentile) and the first quartile (25the percentile)
		IQR is a measure of the spread (variability) of the data values in a distribution
		IQR is an appropriate measure of spread when the median (50th percentile) is used as the measure of center
	www.ed.uiuc.edu /courses/epsy480/formulas/list1.html (594 words)

	iqr (Statistics Toolbox) (Site not responding. Last check: 2007-10-22)
		iqr(X) computes the difference between the 75th and the 25th percentiles of the sample in X. The IQR is a robust estimate of the spread of the data, since changes in the upper and lower 25% of the data do not affect it.
		If there are outliers in the data, then the IQR is more representative than the standard deviation as an estimate of the spread of the body of the data.
		The IQR is less efficient than the standard deviation as an estimate of the spread, when the data is all from the normal distribution.
	www.tau.ac.il /cc/pages/docs/matlab/help/toolbox/stats/iqr.html (136 words)

	IQR (Site not responding. Last check: 2007-10-22)
		The IQR is the range of the middle half (50%) of the data.
		That is, the IQR of a data vector is the difference between the first and third quantiles.
		The IQR is a measure of spread like the standard deviation.
	www.math.csi.cuny.edu /st/stRmanual/IQR.html (52 words)

	Software Suite restores data on PCs., InaSoft Inc.
		IQR Standard is for PC users within an enterprise as well as desktop infrastructure support staff who handle common system threats and require a flexible, fast and complete system restore mechanism.
		IQR Lite is for users of public, institutional or embedded PCs such as libraries, kiosks, classrooms and other situations where a static PC software installation must be maintained and where users may not permanently save changes to the PC’s hard drive.
		IQR Lite provides a single checkpoint that is always restored when the PC is booted.
	news.thomasnet.com /fullstory/19602 (1074 words)

	IQR - Internationalisation Quality Review presentation (Site not responding. Last check: 2007-10-22)
		IQR is a quality audit programme geared to assess the individual international objectives and need stated by the participating institution.
		The IQR process is based on two main components, self-assessment and external review, as explained in the guidelines provided by the organisers.
		IQR is jointly managed by IMHE and the Academic Cooperation Association (ACA).
	www.oecd.org /document/50/0,2340,en_2649_34525_33919666_1_1_1_1,00.html (743 words)

	DATAllegro IQR - Intelligent Query Router (Site not responding. Last check: 2007-10-22)
		DATAllegro IQR hides the complexity of a sophisticated data warehouse by intelligently routing queries to the appropriate DATAllegro appliance for optimal performance and throughput.
		DATAllegro IQR is an add-on product to DATAllegro data warehouse appliances that enables you to leverage a multi-appliance approach to build a comprehensive data warehouse appliance architecture that suits your needs and budget.
		DATAllegro IQR is software that intelligently manages query workloads and failover processing across DATAllegro data warehouse appliances.
	www.datallegro.com /products/iqr.asp (192 words)

	DATAllegro Releases Intelligent Query Router
		DATAllegro IQR (Intelligent Query Router) can be purchased as an add-on to any of DATAllegro’s data warehouse appliances.
		When used with both DATAllegro P3 and DATAllegro C25, DATAllegro IQR can be part of a multi-tier data warehouse that lets companies age their data gracefully.
		DATAllegro IQR works behind the scenes, intelligently routing the query to the appropriate appliance, without any changes to end user tools or applications.
	www.datallegro.com /pr/7_19_05_iqr.asp (432 words)

	Mathwords: Outlier
		One definition of outlier is any data point more than 1.5 interquartile ranges (IQRs) below the first quartile or above the third quartile.
		Note: The IQR definition given here is widely used but is not the last word in determining whether a given number is an outlier.
		IQR = 10.5 – 3.5 = 7, so 1.5·IQR = 10.5.
	www.mathwords.com /o/outlier.htm (150 words)

	IQR (Site not responding. Last check: 2007-10-22)
		We use our own heating plant to provide towns and the rest of society with environmentally friendly thermal power in the form of district heating, and efficient system which means that householdes do not have to get involved with environmentally hazardous incineration and the wasteful use of virigin resources such as oil, gas, etc.
		Because we want to have an active influence in the international arena as regards issues relating to the environment, waste disposal and energy, it is important that we take responsibility at a local level.
		Now that IQR Energy is taking over its operation, we will be continuing to use the same material, proving that this technology works in the long term.
	www.iqr.se /areas/energy/energy.html (655 words)

	Resetting of sympathetic rhythm by somatic afferents causes post-reflex coordination of sympathetic activity in rat -- ...
		Pairwise statistical comparisons revealed that the dominant rhythm (median frequency, 0.61 Hz; IQR 0.55-0.73 Hz; n = 18) and this measure of the post-stimulation rhythm (median frequency, 0.64 Hz; IQR 0.56-0.72 Hz; n = 18) were not significantly different (Fig.
		We therefore suggest that discharge 'a', which has a latency that is not correlated to that of the dominant rhythm period, is a reflex response, and discharge 'b' represents the first discharge following the resetting of the dominant rhythm.
		The histogram in the inset shows the median ± IQR frequency for the dominant rhythm (d) and the post-stimulus rhythm (p-s).
	jp.physoc.org /cgi/content/full/533/2/537 (5496 words)

	MidtermAnswers
		Since the distribution is skewed, the inter-quartile range (IQR) is more appropriate to describe variability than is the standard deviation.
		Assume you were given the uniform population of single digits (0 through 9) which we have used so often.
		This is the sampling distribution of IQRs based on samples of size 5 from our specified population.
	www.siu.edu /~epse1/leitner/506Spr2002/MidtermAsnwers.html (1589 words)

	title
		IQR 6.0 is the next generation client/server version in the long line of IQR software products.
		The IQR 6.0 Server is MS SQL based and can be installed your existing MS SQL Enterprise Server, or comes with an installable version of MSDE. The IQR 6.0 Client supports the following Microsoft operating systems: Windows 95, Windows 98, Windows NT, Windows 2000, and Windows XP.
		IQR 6.0 is available at no additional cost as part of the IQR Software Maintenance Agreement.
	www.iqr.com /page4.html (177 words)

	Abstract
		There was substantial variability between patients, with largest interquartile range (IQR) for pulmonary embolism.
		The median utilities ranged from 0.33 (IQR = 0.39) for ‘life after a nonfatal stroke’ to 0.96 (IQR = 0.18) for ‘no VKA treatment’.
		For ‘pulmonary embolism’ the median utility was 0.63 (IQR = 0.50), for ‘gastro-intestinal bleeding’ 0.65 (IQR = 0.37), for ‘muscular bleeding’ 0.76 (IQR = 0.36) for ‘post-thrombotic syndrome’ 0.82 (IQR = 0.31) for ‘deep vein thrombosis’ 0.84 (IQR = 0.34) and for ‘VKA treatment’ 0.92 (IQR = 0.22).
	www.blackwellpublishing.com /isth2003/abstract.asp?id=7712 (329 words)

	Baseline Viral Load and the Number of PI Mutations Are Associated with the Virological Outcome of Ritonavir-boosted ...
		Patients were exposed to a median number of 7.5 (IQR 6, 9) drugs for a median number of 3.8 (IQR 3.3, 4.3) years.
		The baseline number of resistance mutations was 4 [IQR 3, 5 for nucleoside reverse transcriptase inhibitors (NRTIs), 1 (IQR 0, 2)] for non-nucleoside reverse transcriptase inhibitors (NNRTIs) and 6 [IQR 5, 8 for protease inhibitors (PIs)].
		Median APV concentration was 1750 ng/mL (IQR 1130, 2520).
	www.hivandhepatitis.com /recent/pibosted/072604_b.html (422 words)

	California Geological Survey - Strong Motion Instrumentation Program
		Structural measurements are studied after events to analyze the performance of structures, with the goal of mitigating future earthquake impacts through improved building codes for safer, more earthquake resistant structures.
		The IQR and the IDR are based on the design concept of the traditional Quick Report and is streamlined in an automated fashion.
		The release of IQR is usually accompanying with the release of ShakeMap and is for earthquakes of magnitude 4.0 or above and for events with strong-motion recordings.
	www.consrv.ca.gov /CGS/smip/index.htm (538 words)

	s209 m5 standardized coefficients (Site not responding. Last check: 2007-10-22)
		The robust standardized coefficient is similar to the standardized coefficient, but uses the interquartile range IQR instead of the standard deviation as a measure of dispersion.
		EX: an increase of one IQR in OUTRATIO is associated with an increase in PAUP of 12.032 units; an increase of one IQR in POP is associated with a decrease in PAUP of 12.751 units.
		EX: the maximum impact of OUTRATIO on PAUP, which is equal to 44.368 units of PAUP, corresponds to a proportion.765 of the maximum range of PAUP (58 units).
	www.unc.edu /~nielsen/soci209/m5/m5std.htm (707 words)

	Incidence and Risk Factors for Immune Reconstitution Inflammatory Syndrome in an Ethnically Diverse HIV Type 1 Infected ... (Site not responding. Last check: 2007-10-22)
		The strongest independent predictors of IRIS were younger age at initiation of HAART (P =.003), baseline CD4 cell percentage of <10% (odds ratio [OR], 2.97; IQR, 1.177.55) compared with >15%, and ratio of CD4 cell percentage to CD8 cell percentage of <0.15 (OR, 3.45; 95% confidence interval, 1.279.1) compared with >0.3.
		At initiation of HAART, the median age of patients was 35 years (interquartile range [IQR], 30.740 years), and the median CD4 cell count and viral load were 174 Ã— 106 cells/L (IQR, 82285 Ã— 106 cells/L) and 37,830 copies/mL (IQR, 4809149,653 copies/mL), respectively.
		The median time to onset of the first IRIS event was 12 weeks (IQR, 424 weeks), and 65% of events occurred within 3 months after initiation.
	www.hivdent.org /medical/medIRFI0206.htm (2819 words)

	STAT406 (96F) Solution 4
		The theoretical IQR (which is 2) is obtained by solving next integral equation:
		Again, naive method takes time but the difference is not huge compared to the IQR case.
		In IQR generation, exponential spacing is the fastest.
	www-personal.umich.edu /~hiroaki/class/96F/stat406/sol/sol4.html (1325 words)

	Data Session 6, Part B: Comparative Observational Studies
		This comparison can be based on the range of all the data (Max - Min) as well as on the range of the middle half of the data (which is called the Q-Spread or Interquartile Range, or simply the IQR), which is found by subtracting Q1 from Q3.
		Based on the comparative box plots, there is more variation in the raisin counts for Brand D raisins than for Brand C raisins.
		The values for the ranges and IQR confirm this (Range C = 7, Range D = 15; IQR C = 3, IQR D = 6).
	www.learner.org /channel/courses/learningmath/data/session6/part_b/interquartile.html (325 words)

	[No title]
		This is one reason why "eliminating data that exceed two or three standard deviations" may not be a good, or even a reasonable, decision rule.
		A simple task is to compute the inter-quartile-range (IQR) and then use a multiple of it as a number that defines what values are considered outliers.
		Basic computing skills are required to find the inter-quartile-range (IQR) and then use a multiple of it as a number that defines what values could be considered outliers.
	darkwing.uoregon.edu /~robinh/data_prblms.txt (1870 words)

	AEGiS-08CROI: Patterns of cytokine production to hepatitis C virus (HCV) antigens in intrahepatic CD4-enriched cells in ...
		Median and intraquartile range (IQR) values were calculated for HIV/HCV and HCV groups and compared using the Mann-Whitney U test.
		In cells stimulated with Core, median HIV/HCV versus HCV secretion of IFNgamma was 0 (IQR 7.5) vs. 0 (IQR 318), TNFalpha was 0 (IQR 15) vs. (IQR 117) and IL-10 was 10 (IQR 28) vs. 47 (IQR 93); p > 0.05.
		With NS5 stimulation of HIV/HCV vs. HCV cells, IFNgamma secretion was 0 (IQR 10) vs. 0 (IQR 112) (p > 0.05), TNFalpha 33 (IQR 98) vs. 50 (IQR 123) (p > 0.05) and IL-10 0 (IQR 0) vs. 60 (IQR 168) (significant at p < 0.01).
	www.aegis.com /conferences/croi/2001/563.html (550 words)

	[52] INTRATHORACIC FAT IN HIV-INFECTED PATIENTS
		There were no significant differences in age, CD4 cells, intrathoracic and subcutaneous thoracic fat, and intra-abdominal and subcutaneous abdominal fat between cases without (n=8) and with (n=19) antiretroviral therapy, respectively.
		The median ratio of intrathoracic to subcutaneous thoracic fat was 0.200 (IQR: 0.110–0.356) in cases and 0.056 (IQR: 0.038–0.088) (P<0.001) in controls.
		The median ratio of intra-abdominal to subcutaneous abdominal was 0.539 (IQR: 0.247–0.905) in cases and 0.344 (IQR: 0.257–0.495) in controls (P=0.163).
	www.aegis.com /conferences/lipo/2004/52.html (327 words)

	IQR's and boxplots
		So both the 23rd and 24th number must be 3's.
		For Tukey, the IQR was the best way to measure spread when working with medians.
		They, together with IQR's, aren't all that great for inferential statistics, but for quick descriptive statistics and the field of statistics Tukey started called Exploratory Data Analysis, they work very well.
	www.nova.edu /~hammack/stat/numstat/c3.html (616 words)

	DATAllegro Releases IQR
		DATAllegro IQR routes queries between data warehouse appliances.
		DATAllegro, supplier of the premier price/performance data warehouse appliance, recently announced the release of DATAllegro IQR, an intelligent intermediary that automatically directs queries between DATAllegro data warehouse appliances.
		DATAllegro C25 is a high-capacity data warehouse appliance with a 25-terabyte capacity, while DATAllegro P3supports high-performance data warehouses of up to 3 terabytes.
	www.b-eye-network.com /view/1209 (224 words)

	A pilot study to compare the single aortic cross clamp technique with the side clamp technique for coronary artery ...
		There was no significant difference between the two groups in the mean number of grafts per patient (G1;3, IQR, 3 to 3, vs G2; 3, IQR, 2.25 to 3) and the cardiopulmonary bypass time (G1; 78, IQR, 60.5 to 87.5min., vs G2; 75.5, IQR, 51.5 to 117.3 min.).
		Aortic cross clamp time was significantly longer in G1; (52, IQR, 45to 63.5 min.), vs G2; (41.5, IQR, 30.25 to 57.75 min.) (P<0.04).
		Conclusion: This study suggests that despite a significant increase in the total ischemic time, there was no significant difference in myocardial damage between the two groups.
	www.ctsnet.org /doc/3004 (360 words)

	LanSafe Systems, Inc. "InaQuick Rescue"
		IQR Checkpoint technology, a protected data "checkpoint" containing a point-in
		Using the IQR rescue function, a user or support engineer can
		IQR Professional and/or IQR Standard, installed on PCs on the network from a
	www.lansafe.net /iqr.html (481 words)

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