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Topic Area: Statistics

Displaying records 81 to 90 of 108 records.
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81. Interlaboratory Comparisons
Topic: Statistics
Published: 12/10/2007
Author: William F Guthrie
Abstract: An interlaboratory comparison for a measurement procedure is an exercise carried out by a group of laboratories to compare their performance or assess a measurement standard. Interlaboratory comparisons are typically used for one of three main purpos ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51102

82. Assessment of measurement uncertainty via observation equations
Topic: Statistics
Published: 12/3/2007
Authors: Antonio M Possolo, Blaza Toman
Abstract: According to the Guide to the Expression of Uncertainty in Measurement, measurement uncertainty is assessed by computational propagation of error based on a measurement equation that expresses the measurand as a known function of input variables. How ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51223

83. Evolution of Modern Approaches to Express Uncertainty in Measurement
Topic: Statistics
Published: 11/27/2007
Authors: Raghu N Kacker, K D Sommer, Bernd Siebert
Abstract: The object of this paper is to discuss evolution of the concept of uncertainty in measurement and methods for its quantification from the classical error analysis to the modern approaches based on the Guide to the Expression of Uncertainty in Measure ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51120

84. Conservative Confidence Intervals Based on Weighted Means Statistics
Topic: Statistics
Published: 4/15/2007
Author: Andrew L Rukhin
Abstract: For weighted means estimators of the common mean of several normal populations associated (conservative) confidence intervals are constructed. These intervals are compared to several traditional confidence bounds. Monte Carlo simulation results of th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150388

85. Statistical Interpretation of Key Comparison Degrees of Equivalence Based on Distributions of Belief
Topic: Statistics
Published: 4/2/2007
Author: Blaza Toman
Abstract: In a Key Comparison experiment, the Mutual Recognition Arrangement (MRA) requires the calculation of the Degrees of Equivalence (DoE) and the accompanying measures of uncertainty. Unilateral DoEs have been defined as a difference between a laboratory ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50904

86. Comments on 'Bayesian evaluation of comparison data' by Ignacio Lira
Topic: Statistics
Published: 1/1/2007
Authors: Raghu N Kacker, Blaza Toman
Abstract: A recent paper by Ignacio Lira in Metrologia 43 (2006) S231-S234 addresses a well-known problem in combining information from interlaboratory evaluations. Lira presents an expression, which he claims to be the kernel of a Bayesian posterior probabili ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50952

87. Random-Effects Model for Meta-analysis of Clinical Trials: An Update
Topic: Statistics
Published: 1/1/2007
Authors: Rebecca DerSimonian, Raghu N Kacker
Abstract: The random-effects model is a useful approach for meta-analysis of clinical studies. It explicitly accounts for the heterogeneity of studies through a statistical parameter representing the inter-study variation. We discuss several iterative and non- ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51313

88. Bayesian Alternative to the Guide's Use of the Welch-Satterthwaite Formula
Topic: Statistics
Published: 1/3/2006
Author: Raghu N Kacker
Abstract: The Guide to the Expression of Uncertainty in Measurement suggests that to account for the statistical uncertainty in a combined standard uncertainty that arises when one or more of its components are evaluated from a limited number of independent no ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150900

89. Uncertainty Analysis for Vector Measurands Using Fiducial Inference
Topic: Statistics
Published: 1/1/2006
Authors: Chih-Ming Wang, Hariharan K Iyer
Abstract: This paper presents a method for constructing uncertainty regions for a vector measurand in the presence of both type-A and type-B errors. The method is based on the principle of fiducial inference and generally requires a Monte Carlo approach for co ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150367

90. Soft Decision Metrics for Turbo-Coded FH M-FSK Ad Hoc Packet Radio Networks
Topic: Statistics
Published: 10/1/2005
Authors: B M Peric, Michael R Souryal, E G Larsson, B R Vojcic
Abstract: This paper addresses turbo-coded non-coherent FH M-FSK ad hoc networks with a Poisson distribution of interferers where multiple access interference can be modeled as symmetric a-stable (SaS) noise and a is inversely proportional to the path loss ex ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150118



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