Fig. 3
From: Quantifying crowding perception at large events using beacons and surveys
Qualitative perception of crowding and the temporal accuracy of perceived crowding (a) Correlation between the response rate regarding crowding and the maximum approximated crowd size. (b) Histogram comparing perceived and measured crowding times. (c) Box plot depicting the relationship between perceived and measured crowding times for each individual. The boxes are generated for each one-hour interval of perceived time. Orange lines represent the median. Blue triangles represent the mean. The broken line in the plot represents the line of equality, where the perceived crowding times would match exactly with the measured crowding times. (d) Histogram of the absolute differences in perceived versus measured crowding times, normalized by the duration of stay. The black dashed line represents the expected differences for random responses. 77.5% of participants reported times of crowding that were more accurately pinpointed than what would be expected from random responses.
