HANDLING REPLICATIONS IN DISCRIMINATION TESTS

Citation
Pb. Brockhoff et P. Schlich, HANDLING REPLICATIONS IN DISCRIMINATION TESTS, Food quality and preference, 9(5), 1998, pp. 303-312
Citations number
7
Categorie Soggetti
Food Science & Tenology
Journal title
ISSN journal
09503293
Volume
9
Issue
5
Year of publication
1998
Pages
303 - 312
Database
ISI
SICI code
0950-3293(1998)9:5<303:HRIDT>2.0.ZU;2-3
Abstract
We give in this paper an easy to use and statistically sound way of ha ndling replications in discrimination tests based on a concept called overdispersion. The overdispersion is easily calculated by hand for an y discrimination testing setup. And since the method simply amounts to correcting the total number of observations, and similarly the overal l response, by the overdispersion, we can use any standard technique, table or software on the corrected numbers to perform a statistical te st for difference, for similarity, power calculations, controlling ris k I and risk II, etc. We also include a general discussion of the repl icated discrimination testing situation, and some examples to illustra te how to use the method. The SAS(R) macro REPRISKS that handles all c omputations is available by e-mail: schlich@arome.dijon.inra.fr. (C) 1 998 Elsevier Science Ltd. All rights reserved