F & p Plots
Previous Top Next
This function generates F plots, plotting F-values from a one-way ANOVA for each assessor.
Each vertical line is the F-value of one specific assessor for a specific attribute.
The F-value is a measure of the ability of an assessor to discriminate between samples. The
higher the F-value, the better.
The radio buttons under sorted by, decides whether the F-values are sorted by assessors or
attributes.
The “general plot” in the top of the tree control will plot the F-values in different colours,
whereas by clicking on a specific attribute or assessor (depending on the sorting-mode) will
highlight that specific attribute or assessor.
The red and black horizontal lines indicate the significance level at 1% and 5%, respectively.
Further reading:
Oliver Tomic, Asgeir Nilsen, Magni Martens, Tormod Næs, Visualization of sensory profiling
data for performance monitoring, LWT 40 (2007) 262–269.