Abstract
Six transformations viz., log(x + 1), log(x + k), \(sin \,{h^{ - 1}}\sqrt{\beta-1/\alpha + 1} \) x, x1 − b/2, log[log (x + 2)] and log[log (x + k )] were tested for their efficiency in stabilizing variance of Coccus viridis (Green) population counts which followed negative binomial distribution. Only log[log(x + 2)] transformation was found effective in stabilizing variance. This is a new transformation proposed by the authors.
Résumé
Six transformations, á savoir, log(x + 1), log(x + k), \(sin \,{h^{ - 1}}\sqrt{\beta - 1/\alpha + 1} \), log[log(x + 2)], et log[log(x + k)] ont été essayées pour leur efficacité concernant la stabilisation de variance des comptes de populations de Coccus viridis (Green), lequeles ont suivis une distributions binomiale negative. Seule la transformation log[log(x + 2)] s’est trouvée comme efficace pour stabiliser variance. C’est une nouvelle transformation proposée par les auteurs présents.
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Tandon, P.L., Veeresh, G.K. Appropriate Transformation for the Population Counts of Citrus Green Scale, Coccus viridis (Green) (Coccidae, Homoptera). Int J Trop Insect Sci 8, 255–257 (1987). https://doi.org/10.1017/S1742758400007311
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DOI: https://doi.org/10.1017/S1742758400007311