| Título: | GMO proficiency testing : interpreting z-scores derived from log-transformed data |
| Autores: | THOMPSON, MICHAEL |
| Tipo de documento: | texto impreso |
| Editorial: | Cambridge [REINO UNIDO] : Royal Society of Chemistry, 2004 |
| Colección: | AMC Technical Brief, num. 18 |
| ISBN/ISSN/DL: | 29651 |
| Dimensiones: | 2 p. |
| Nota general: | ISBN: |
| Langues: | Inglés |
| Clasificación: | |
| Resumen: | In some proficiency tests concerned with measuring the proportion of genetically modified organism (GMO) in food the results produced are logtransformed (converted into logarithms) before zscores are calculated [1]. The transformation can be justified both theoretically and practically. However, the transformation gives rise to z-scores that are not on the same type of scale as the original data, and are therefore less readily interpreted. A certain amount of background in logarithmic transformation may be helpful. |
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 29651 Adobe Acrobat PDF |
