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 deviation or the variance, and both are equal to 0 when the scores are identical. And dividing by 0 is not really “appreciated” by computers…
Note that, at the panellist level, the agreement is measured through the correlation coefficient. And computing the correlation coefficient with two samples is quite critical, as you would need more samples!
More generally, running panel/panellist performance on dataset involving only two samples work from a mathematical point of view, but is not recommended as you would need more samples to get valuable results.
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 ...
How to load, create and update EyeQuestion panel
EyeQuestion Panel The panel manager can add a panel to a project to allow specific panelists to answer that questionnaire. The used panel can be found under the access list (on the right side of the page). (In this case it is still empty) Load a ...
Importing Panelists into a Specific Panel Group
Introduction In sensory science, a panel group refers to a specialized group of individuals who are trained to evaluate sensory attributes such as taste, smell, texture, appearance, and overall sensory experience of products or stimuli. You can learn ...
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 are ...
Panelist Performance Analysis
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 profiling dataset. ...