id: 06619314
dt: j
an: 2016e.00899
au: Hoppe, Fred M.
ti: Benford’s law and distractors in multiple choice exams.
so: Int. J. Math. Educ. Sci. Technol. 47, No. 4, 606-612 (2016).
py: 2016
pu: Taylor \& Francis, Abingdon, Oxfordshire
la: EN
cc: K50
ut: Benford’s law; multiple-choice exams
ci:
li: doi:10.1080/0020739X.2015.1091515
ab: Summary: Suppose that in a multiple choice examination the leading
significant digit of the correct options follows Benford’s Law, while
the leading digit of the distractors is uniform. Consider a strategy
for guessing at answers that selects the option with the lowest leading
digit with ties broken at random. We provide an expression for both the
probability that this strategy selects the correct option and also the
generalization to the probability of selecting the option with the
lowest $r$ significant digit string.
rv: