Table 6.

The rank and the percentile of the collective answer (based on either median or mean) among all individual answers provided by the students in three consecutive exercises where students had a decreasing level of expert knowledge*

	Collective answer–median			Collective answer–mean
Exercises on collective knowledge	Rank	Percentile (% top answers)	“Error size” parameter	Rank	Percentile (% top answers)	“Error size” parameter
Medical (Year 1) knowledge	35/168	20.83%	725	127/168	75.60%	48 975
General knowledge	21/176	11.93%	38	164/176	93.18%	5430
Astronomy knowledge	12/171	7.02%	1132	164/171	95.91%	663 265 715

*Addition of the collective answer increased the total number of received answers by one, resulting in 168, 176 and 171 responses being ranked in each exercise, respectively; percentile of eg, 20.83% means that the collective response ranked among the 20.83% most accurate individual responses).