Scores of individual doctors on Vocation/Engagement (ordinate) and Avocation/Leisure (abscissa). The fitted line is a lowess curve. Note that because both measures are factor scores, they are expressed as z-scores (that is, a mean of zero and a standard deviation of one).
McManus et al. BMC Medicine 2011 9:100 doi:10.1186/1741-7015-9-100