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    Author(s): Jonathan W. Wright
    Date: 1977
    Source: In: Proceedings of the Thirteenth Lake States Forest Tree Improvement Conference; Gen. Tech. Rep. NC-50. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 147-157
    Publication Series: General Technical Report (GTR)
    Station: North Central Research Station
    PDF: View PDF  (145.03 KB)

    Description

    Irregular experiments may be more useful than much smaller regular experiments and can be analyzed statistically without undue expenditure of time. For a few missing plots, standard methods of calculating missing-plot values can be used. For more missing plots (up to 10 percent), seedlot means or randomly chosen plot means of the same seedlot can be substituted for missing plots, provided between-block differences are small. Whatever the number of missing plots (provided there is more than one plot per seedlot) or the size of the between-block differences, seedlot means and sums of squares can be estimated in terms of deviations from block means. The procedures for calculation of analysis of variance in terms of deviations are described. The procedures are also applicable to regular experiments.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Wright, Jonathan W. 1977. Analysis of variance calculations for irregular experiments. In: Proceedings of the Thirteenth Lake States Forest Tree Improvement Conference; Gen. Tech. Rep. NC-50. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 147-157

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