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Theory & Methods: An Analysis of Two‐Dimensional Agricultural Field Trials in the Presence of Outliers and Fertility Jumps
Author(s) -
Taplin Ross H.
Publication year - 1999
Publication title -
australian and new zealand journal of statistics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.434
H-Index - 41
eISSN - 1467-842X
pISSN - 1369-1473
DOI - 10.1111/1467-842x.00083
Subject(s) - fertility , outlier , mathematics , jump , econometrics , statistics , agriculture , set (abstract data type) , field (mathematics) , computer science , geography , demography , physics , population , archaeology , quantum mechanics , sociology , pure mathematics , programming language
This paper proposes a model for outliers and fertility jumps in agricultural field trials when the fertility is correlated in two directions. Uncertainty concerning the occurrence of these anomalies can be substantial, especially when outliers occur near a fertility jump. The proposed estimation technique can take this uncertainty into account rather than condition on a particular set of anomalies. Diagnostics for the detection of these anomalies are also discussed. The procedures are illustrated with a wheat trial.