This is the raw data collected as part of a choice prediction competition organized by the three authors for decisions under risk, under ambiguity, and from experience. It includes over 330,000 consequential choices of human participants between two risky and/or uncertain prospects. More details about the competition and the data can be found in http://departments.agri.huji.ac.il/cpc2015. If you use this data, please cite the paper describing the competition: Erev, I., Ert, E., Plonsky, O., Cohen, D., & Cohen, O. (2017). From anomalies to forecasts: Toward a descriptive model of decision under risk, under ambiguity, and from experience. Psychological Review, 124(4), 369-409. DOI: 10.1037/rev0000062