Claim · model-written summary
The customary log transformation is inapplicable to smaller lesion count means.
Not reportedTaxonMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Verbatim
e0“When mean values of x are greater than about 10, the transformation z = log10 (x + c) (where c is a constant), is satisfactory but inapplicable with smaller numbers.”
Title
A. KLECZKOWSKI Journal of General Microbiology 1955. doi:10.1099/00221287-13-1-91
Other claims from this paper (6)
- Observation Local lesion counts across leaves inoculated with the same virus preparation deviate greatly from normality.
- Association Standard errors of lesion counts depend on count magnitude.
- Method / resource The customary log transformation is satisfactory when mean lesion counts exceed about 10.
- Method / resource The new transformation works satisfactorily for mean lesion numbers above about 1·5.
- Method / resource Results of the two transformations converge as lesion count increases.
- Method / resource Tabulated values of z make the new transformation as quick to use as the older one.