This document discusses key questions to consider regarding data for research projects that utilize large datasets. It outlines questions about the suitability, type, source, size, format, cleaning requirements, quality, handling of missing data, and evaluation of the data analysis. Specific topics covered include determining if the data is appropriately labeled for the research questions, common data types, sources for finding datasets, reasonable dataset sizes, common data formats, methods for cleaning and assessing data quality, and techniques for evaluating the analysis outcomes.