Fig. 3

Distribution of final exam scores for the two graduating classes. A The proportion of students in different grades, no significant difference Statistical method: Multiple t tests. B Total accuracy, no significant difference. Statistical method: Unpaired test. C The accuracy of flipped classroom chapters, unpaired test, P < 0.05. Mean ± SEM of column A 0.7075 ± 0.009587 N = 3, Mean ± SEM of column B 0.7913 ± 0.02872 N = 3