Figure 8
Panel A: A histogram showing the distribution of student presence targets for the Poster role. The horizontal axis represents the presence targets ranging from 40 to 90, and the vertical axis represents the frequency of students. There are five vertical bars, with the highest frequency around 40 to 50. Panel B: A histogram showing the distribution of student presence targets for the Observer role. The horizontal axis represents the presence targets ranging from 400 to 500, and the vertical axis represents the frequency of students. There are five vertical bars, with the highest frequency around 500. Panel C: A histogram showing the distribution of student presence targets for the Non-Member role. The horizontal axis represents the presence targets ranging from 450 to 550, and the vertical axis represents the frequency of students. There are five vertical bars, with the highest frequency around 450.Histograms of the student presence targets