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dc.contributor.authorNordheim, Erik V.
dc.contributor.authorWeed, Richard M.
dc.contributor.authorSchmitt, Robert
dc.contributor.authorOwusu-Ababio, Samuel
dc.date.accessioned2007-02-01T22:47:43Z
dc.date.available2007-02-01T22:47:43Z
dc.date.issued2006-04
dc.identifier.otherOCLC:70142504
dc.identifier.otherTRIS:01030729
dc.identifier.urihttp://www.mrutc.org/research/0604/
dc.identifier.urihttp://digital.library.wisc.edu/1793/6991
dc.description115 p. (Final report and appendices A and B); [28] p. (Appendix C); [28] p. (Appendix D)en
dc.description.abstractThis report provides maintenance managers and practitioners with knowledge of how to apply statistics in MQA programs. Literature were reviewed and MQA manuals from 10 states were synthesized to understand state-of-practice for managing statistics in MQA programs. It was observed among lead states that a wide range of measured elements and threshold definitions exist for roadway, roadside and vegetation, drainage, traffic control, and rest areas. The role of statistics in MQA was described, and key statistical terms were defined. Actual MQA data were collected and analyzed to illustrate how fundamental statistical procedures and applications to describe features of MQA data. Examples were demonstrated for basic summary statistics, confidence intervals, data stratification, analysis of variance, sample size determination, precision, sensitivity analysis, and power level of statistics when evaluating the QA process itself. A new ranking procedure was developed that applies the concepts of percent defective (PD) or percent within limits (PWL), and computes confidence limits for the statewide system or any strata (functional class, division, county, or 10-mile roadway segment), and then ordering them by their lower confidence limits. If those limits do not include the desired level of the particular measure, then that particular section of pavement would be considered noncompliant.en
dc.description.sponsorshipU.S. Department of Transportation--Research and Special Programs Administration; Wisconsin Department of Transportation; University of Wisconsin--Madison; University of Wisconsin--Platteville; DTRS 99-G-0005en
dc.format.extent4410865 bytes
dc.format.extent4022925 bytes
dc.format.extent912356 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.publisherMidwest Regional University Transportation Centeren
dc.relation.ispartofseries06-04en
dc.relation.ispartofseriesMRUTCen
dc.subjectMaintenance managementen
dc.subjectMaintenance quality assuranceen
dc.subjectConfidence limitsen
dc.subjectQuality assuranceen
dc.subjectMQAen
dc.subjectPercent defectiveen
dc.subjectStatistical analysisen
dc.subjectMaintenance practicesen
dc.subjectPercent within limitsen
dc.subjectStatisticsen
dc.subjectSensitivity analysisen
dc.titleDevelopment of a guide to statistics for maintenance quality assurance programs in transportationen
dc.typeTechnical Reporten


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