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Restricted randomization for blocks of sixteen plots

Published online by Cambridge University Press:  27 March 2009

G. V. Dyke
G. V. Dyke
Affiliation:
Bothamsted Experimental Station
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Extract

Grundy & Healy (1950) developed a method of ‘restricted randomization’ applicable to factorial experiments of 2n or 3n type laid out either in quasi-Latin squares of size 8 × 8 or 9 × 9, or in blocks of 8 or 9 plots. This method of randomization, while in no way affecting the validity of the normal analysis, prevents the appearance of designs with obviously undesirable features. Grundy & Healy gave an example of a quasi-Latin square inwhich the main effect of one factor corresponded to the pattern:

Type
Research Article
Information
The Journal of Agricultural Science , Volume 62 , Issue 2 , April 1964 , pp. 215 - 217
Copyright
Copyright © Cambridge University Press 1964

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References

Grundy, P. M. & Hbaly, M. J. R. (1950). J. E. Statist. Soc. B, 12 (2), 286.Google Scholar
Dyke, G. V. (1962). Rep. Rothamst. Exp. Sta. for 1962, p. 183.Google Scholar