Examples are opinions on a five-point scale, such as strongly disagree, disagree, neutral, agree, strongly agree.
Graded data are, like ranked data, one kind of ordinal data.
They are common in many fields, especially as the record of some considered judgment, but little attention seems to have been given to methods for their easy and effective graphical display. This presentation draws on suggestions made in various places by J.W. Tukey, using the principle that cumulative probabilities are a logical and practical way to represent graded data, which is after all the basis for many models for graded responses. Cumulative probability curves for different subsets of the data are found useful in initial description and exploration of the data. In practice, most datasets seem to reveal their basic structure either on raw or on logit scales. In some cases, the discrete response models fitted by previous authors appear, as a consequence, to be unnecessarily elaborate or indirect.