Dreidel Fairness Study
- Robert Nemiroff,
- Eva Nemiroff
Abstract
Are dreidels fair? In other words, does the average dreidel have an
equal chance of turning up any one of its four sides? To explore this
hypothesis, three different dreidels were each spun hundreds of times
with the number of occurrences of each side recorded. It was found that
all three dreidels tested -- a cheap plastic dreidel, an old wooden
dreidel, and a dreidel that came embossed with a picture of Santa Claus
-- were not fair. Statistically, for each dreidel, some sides came up
significantly more often than others. Although an unfair dreidel does
not necessarily make the game itself unfair, it is conjectured that
hundreds of pounds of chocolate have been distributed during Chanukah
under false pretenses.