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Inference on the symmetric-range accuracy.

Authors
Krishnamoorthy-K; Mathew-T
Source
Ann Occup Hyg 2009 Mar; 53(2):167-171
NIOSHTIC No.
20044428
Abstract
The symmetric-range accuracy A of a sampler is defined as the fractional range, symmetric about the true concentration, that includes a specified proportion of sampler measurements. In this article, we give an explicit expression for A assuming that the sampler measurements follow a normal distribution.We propose confidence limits for A based on the concept of a 'generalized confidence interval'. A convenient approximation is also provided for computing the confidence limit. Monte Carlo evaluation indicates that the proposed approaches are very satisfactory even for small samples. The statistical procedures are illustrated using an example involving carbon monoxide monitoring.
Keywords
Samplers; Statistical-analysis; Pollutants; Air-samplers; Author Keywords: bias; coverage probability; non-central chi-square distribution; normal approximation; tolerance intervals
Contact
K. Krishnamoorthy, Department of Mathematics, University of Louisiana at Lafayette, Lafayette, LA 70508
CODEN
AOHYA3
CAS No.
630-08-0
Publication Date
20090301
Document Type
Journal Article
Email Address
krishna@louisiana.edu
Funding Type
Grant
Fiscal Year
2009
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-003628
Issue of Publication
2
ISSN
0003-4878
Source Name
Annals of Occupational Hygiene
State
MD; LA
Performing Organization
University of Maryland, Baltimore
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