Why are the results from panel and panelist performance different?
Although the panel performance and the panellist
performance seems to be linked, at least from an interpretation point of view
(one could expect that the panel is discriminating if panellists are
discriminated), the analyses involved different data (the panellist performance
is based on subset of data, while the panel performance uses all the data at
once). Hence, it can happen that assessors are not so well discriminating while
once combined, the overall results show good discrimination.
The panel and panelist performance do not rely
on the same statistical analysis. Panel performance is based on ANOVA, and the
agreement is based on the product:assessor interaction.The panelist performance is taking only the
panelist data, and the agreement at an individual level is based on the
correlation between that assessor scores and the average across panels.These 2 stats are completely different, have completely
different implications/assumptions, so cannot be compared one to one. Also, in some situations, the lack of
disagreement can be simply due to a different use of the scale, meaning that
the assessors are still “ranking” the samples in the same way, BUT are
emphasizing more or less certain differences.
Direct Feedback, Panelist Feedback on a scale, Panelist Feedback
Direct Feedback The direct feedback function provides the feedback live to panelists. The mean and sd need to be specified for each attribute for each product, so you need to know ahead of the mean and the standard deviation value. When panelists ...
Panelist Performance Analysis
Mar 2022 Author: JM Purpose This analysis looks at the overall panel performance in terms of Discrimination, Agreement and Repeatability or Reproducibility, and then the performance of each individual in the panel in these terms. Data Format See the ...
Why do I have empty cells in panel performance (panelist agreement) ?
The empty cell in the panel/panellist performance is usually due to the fact that you do not have variability in your data (the assessor gives the same score to all the samples). Indeed, most of the analysis requires dividing by the standard ...
How can I import a panel?
You can invite panellists to participate in your panel by: - Transferring them from the Panel Database to the panel access list - Using Import Open a project and click the panel tab. Panelists can be added to the panel by adding them to the access ...
Panel Scheduling in EyeQuestion
Introduction One of the more challenging tasks in conducting sensory and consumer research is the process of manually checking the availability of your panellists participation by calling or emailing them. This traditional approach is not ideal as ...