TITLE Sensory analysis in quality controlˇXthe agreement among raters
AUTHOR Hong-Pang Wu
Institute of Botany, Academia Sinica, Taipei, Taiwan 115, Republic of China
Lee-Shen Chen
Department of Statistics, Ming Chuan College, Taipei, Taiwan, Republic of China
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ABSTRACT This paper considers cluster analysis, kappa methods, and log-linear association models, which are often used to study agreement in medical and psychology research but are rarely used in sensory evaluation, to evaluate the agreement of tea sensory data among panelists. We recorded sensory data six times during the period from 1989 to 1990. There were 8 to 10 well-trained panel members, giving 11 ordinal categories for each tea sample. We then combined the 11 categories into 5 and applied the three methods to measure the agreement among panelists, and we found that agreement among the panelists was not high enough, regardless of the proposed methods.
KEYWORD Cluster analysis; Kappa coefficient (k); Log-linear association model; Panel; Sensory control;
ARTICLE INFO Botanical Bulletin of Academia Sinica, Volume 36 Number 2 April 1995, page 121-133, 13 pages
PUBLISHER Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan, Republic of China