. A mixed-methods analysis of
variance did not reveal a significant main effect for the
students’ selection of A vs B or C, Fð1; 48Þ ¼ 2.096,
p ¼ 0.154. In other words, in the physics class, students
were just as likely to get right an item for which they
had selected B or C as they were one for which they had
selected A