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RECORD NUMBER: 1 OF 13

OLS Field Name OLS Field Data
Main Title Alternative to Least Squares Statistics for Comparison of Duplicate Measurements.
Author Smith, Marjolein V. ; Shaw, Jr., Robert W. ; Paur, Richard J. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1983
Report Number EPA-600/J-81-083;
Stock Number PB83-241216
Additional Subjects Least square method ; Measuring instruments ; Linear regression ; Comparison ; Chemical analysis ; Substitutes ; Environmental surveys ; Reprints ; Bartlett method ; Numerical solution
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB83-241216 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 10p
Abstract
The authors describe a method for the comparison of measurements of the same pollutant taken simultaneously by two instruments. The method requres no information about the precision of the instruments and does not assume, as the typically used linear regression by least squares does, that the errors for one instrument are negligible. The method does require that the data be distributed to permit unambiguous separation into three groups. The method provides confidence interval estimates. They present examples and recommendations for using the method and compare it with least squares. The body of information presented in this paper is directed to anyone who uses linear regression.