We study the impact of online assessments on student
performance in business statistics courses. We quantify the
degree to which students take advantage of various online
opportunities to improve their quiz grades and estimate its
effect on in-class exam scores. We also study the perceptions
of students regarding online assessments using anonymous
surveys. We find that students believe that multiple attempts at
online quizzes help them learn the material, and for the most
part take advantage of these opportunities to improve their
quiz grades. Furthermore, the effect on exam performance is
positive and significant.