We analyze the spending of individuals in the United States on lottery tickets in an average month, as reported in surveys. We view these surveys as sampling from an unknown distribution, and we use non-parametric methods to compare properties of this distribution for various demographic groups, as well as claims that some properties of this distribution are constant across surveys. We find that the observed higher spending by Hispanic lottery players can be attributed to differences in education levels, and we dispute previous claims that the top 10% of lottery players consistently account for 50% of lottery sales.
Garibaldi, S., Frisoli, K., Ke, L., & Lim, M. (2015). Lottery spending: A non-parametric analysis. PLoS ONE, 10(2). https://doi.org/10.1371/journal.pone.0115730