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Biometrika 1988 75(2):201-206; doi:10.1093/biomet/75.2.201
© 1988 by Biometrika Trust
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Standard errors resilient to error variance misspecification

C. A. GLASBEY

Scottish Agricultural Statistics Service, University of Edinburgh, The King's Buildings Edinburgh EH93JZ, U.K.

For parameter estimators in linear models, variance estimates are proposed which are positive-semidefinite quadratic forms like the conventional ones but are less dependent on assumptions about error variance. Examples are given of their use in spatial analyses of field trials and analyses of series of trials.

Key Words: Block-diagonal • Neighbour analysis • Quadratic form • Repeated measurements • Residual • Smoothing • Variety x environment table


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