The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
An Optimum Transformation for Somatic Cell Concentration in Milk
Open accessAbstract
Hypothesis testing in analysis of variance requires that the errors be distributed normally and that subclass variances be homogeneous.The purpose of this study was to find the transformation for somatic cell concentration which meets these characteristics of hypothesis testing.Data consisted of 51,800 monthly tests from 52 herds on Dairy Herd Improvement in Wisconsin.Cell concentration by the Filter-DNA method was thousands of cells/ml.Analysis of untransformed data revealed extensive departure from normality and homogeneity.The family of transformations was Y' = (Y+M) L for L~0 or Y' = Log e (Y+M) for L=0, where Y was the untransformed cell concentration.The analysis included L ranging from -.7 to +.6 and M ranging from 0 to 20.The maximum likelihood estimate of L was zero.By log transformation, student's t for skewness and kurtosis and Chi square for heterogeneity of variance were not different from zero.Adding a constant of 10 before taking the log caused a small improvement in tests of normality and heterogeneity of variance.
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Cites
SNEDECOR, G. W. (1939) · Soil Science · doi:10.1097/00010694-193902000-00006 · Cited by 19,359
An Analysis of Transformations
Box, G. E. P., & Cox, D. R. (1964) · Journal of the Royal Statistical Society Series B: Statistical Methodology · doi:10.1111/j.2517-6161.1964.tb00553.x · Cited by 15,052
Snedecor, G. W., & Cochran, W. G. (1967) · Cited by 6,573
Cited by
Role of Biofilm-Associated Protein Bap in the Pathogenesis of Bovine Staphylococcus aureus
Cucarella, C., Tormo, M. A., Úbeda, C., Trotonda, M. P., Monzón, M., Peris, C., Amorena, B., Lasa, I., & Penadés, J. R. (2004) · Infection and Immunity · doi:10.1128/iai.72.4.2177-2185.2004 · Cited by 369
The Effect of Season on Somatic Cell Count and the Incidence of Clinical Mastitis
Olde Riekerink, R. G. M., Barkema, H. W., & Stryhn, H. (2007) · Journal of Dairy Science · doi:10.3168/jds.2006-567 · Cited by 260
Low Somatic Cell Count: a Risk Factor for Subsequent Clinical Mastitis in a Dairy Herd
Suriyasathaporn, W., Schukken, Y. H., Nielen, M., & Brand, A. (2000) · Journal of Dairy Science · doi:10.3168/jds.s0022-0302(00)74991-5 · Cited by 172
Metadata
- Authors
- Ali, A. K. A., & Shook, G. E.
- Venue
- Journal of Dairy Science
- Publisher
- American Dairy Science Association
- Published
- 1980-03
- Volume
- 63
- Issue
- 3
- Pages
- 487-490
- ISSN
- 0022-0302 (ISSN-L)
- OpenAlex
- W2098787020
- Cited by
- 710
- References
- 3
- FWCI
- 9.80
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Ali, A. K. A., & Shook, G. E. (1980). An Optimum Transformation for Somatic Cell Concentration in Milk. Journal of Dairy Science. https://doi.org/10.3168/jds.s0022-0302(80)82959-6
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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