Accuracy, reliability, and timing of visual evaluations of decay in fresh-cut lettuce
Fig 3
Results of principal component analysis performed on visual ratings.
Decay of fresh-cut lettuce was evaluated in 90 MAP bags by nine raters; each rater evaluating the set of bags twice. R1 to R5 were experienced raters (blue color), while R6 to R9 were inexperienced raters (orange color). A pair of ratings from the same rater are connected by obrounds. The overall mean from all ratings is indicated by the red circle.