Humphreys, Brad; Lee, Yang Seung; Soebbing, Brian P. - In: Journal of Gambling Business and Economics 5 (2011) 1, pp. 1-22
Survey data on participation in gambling typically contain many zeros. The presence of many zeros presents methodological problems for the analysis of participation in gambling markets and gambling expenditure. The most common techniques for handling zeros in gambling data have been the Tobit...