Fig. 5

Percentage of RWU (black bars) versus PC (white bars) students who agree with one of the following statements concerning evolution in science exams: A = I have no problem answering questions concerning evolution, B = science exams should always include some questions concerning evolution, C = do not know enough to say. Comparisons between institutions: a biology majors (RWU n = 237, PC n = 212), Chi-square = 1.058, df = 2, P = 0.58. b Nonmajors (RWU n = 239, PC n = 143), Chi-square = 1.649, df = 2, P = 0.43. c Biology freshman (RWU n = 93, PC n = 70), Chi-square = 0.139, df = 1, P = 0.71. d Biology sophomore (RWU n = 74, PC n = 34), Chi-square = 3.317, df = 1, P = 0.06. e Biology junior (RWU n = 33, PC n = 50), Chi-square = 0.262, df = 1, P = 0.60. f Biology senior (RWU n = 37, PC n = 58), Chi-square = 0.781, df = 1, P = 0.37. Combined freshman, sophomore, junior, and senior responders (mean of RWU + PC) for A vs. B differ in c to f, sign test two-tail P ≤ 0.05