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Analysis of size-grouped potato yield data using a bivariate normal distribution of tuber size and weight

Published online by Cambridge University Press:  27 March 2009

J. E. Hall  and
C. A. Glasbey
J. E. Hall
Affiliation:
Scottish Agricultural Statistics Service, Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, UK
C. A. Glasbey
Affiliation:
Scottish Agricultural Statistics Service, The University of Edinburgh, JCMB, The King's Buildings, Edinburgh EH9 3JZ, UK
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Summary

A bivariate normal model is proposed for the joint distribution of potato tuber size and weight. Parameters in the model are estimated from the yields and numbers of tubers in a range of riddle-size categories. The method is illustrated using data from a field experiment; parameters are estimated for each plot, and subjected to analysis of variance. The result is a more succinct summary of treatment effects than that produced in the traditional analysis, where data from each riddle size are analysed separately.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 121 , Issue 2 , October 1993 , pp. 193 - 198
Copyright
Copyright © Cambridge University Press 1993

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References

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