Figure 1From: What is the value of social values? The uselessness of assessing health-related quality of life through preference measuresScatterplot illustrating the degree of association between the weighted and the unweighted EuroQol scores. A small line, called a petal, is added to each point on the scatterplot to indicate how many observations each point represents; each petal symbolizes 100 cases. Dotted lines mark the maximum and minimum limits of the scales, that is to say, the range of possible scores.Back to article page