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For the sea water microbiology project a step-by-step approach was followed. In the statistical analysis report only the experimental protocol and statistical analysis employed for the five steps are explained. The technical results and microbiological conclusions are presented in another report (Part I). For each trial the presentation is as follows: aim, experimental design and adapted statistical treatment. For each step experimental trials were chosen in complete block designs or in balanced designs. The statistical tests which were used depended on the number of data. Parametric tests were applied after a logarithmic transformation when sufficient data were available, otherwise non-parametric tests were used. Graphical representations were always performed to display and explain test results in an attractive manner.
The statistical treatment was performed in the following way: determination and characterization of a reference method by eliminating outliers, then by calculating repeatability, reproducibility figures and the target values with parametric tests (ANOVA, regression etc); comparison of each individual method with the reference method and then evaluation of method effects with non-parametric tests (Box-Plot, Mann and Whitney etc), no value of the individual methods was discorded; determination of clusters of equivalent methods with a principal component analysis and a hierarchical classification.

Additional information

Authors: DEMARQUILLY C, Faculté des Sciences Pharmaceutiques et Biologiques, Lille (FR);BONIFACE B, Faculté des Sciences Pharmaceutiques et Biologiques, Lille (FR);MAIER E A, CEC Bruxelles (BE)
Bibliographic Reference: EUR 16613 EN (1995) 72pp., FS, free of charge
Availability: Available from the SMT Programme Office, European Commission, DG XII-C-5, 200 rue de la Loi, B-1049 Bruxelles (BE), Fax: +32-2-2958072
ISBN: ISBN 92-827-4455-8
Record Number: 199730004 / Last updated on: 1997-04-01
Original language: en
Available languages: en
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