Figure 3

Data from a simulated analysis of a single examiner at each station, based on the data for PACES diets 1–26. Only ethnic bias is considered, for simplicity, with the top graph showing a simple comparison of White with non-white candidates, and the lower graph showing a more complex analysis in which individual marks are compared with a basket of marks awarded by other examiners at other stations. Each point represents an individual examiner, plotted against the number of candidates examined, and with the significance indicated (grey, NS; orange and green p < .05 uncorrected; red and blue, p < .05 Bonferroni corrected).