A
dataset is a collection of data, while a
data source is the organization/entity that aggregates, assembles, and publishes the data. These datasets must come from different data sources (organizations). For example, the Bureau of Labor Statistics has many datasets — use as many as you like from them, but that only counts as 1 data source. Part of your job is to combine these sources: for example, you might combine inflation data from the
US Bureau of Labor Statistics with homelessness data from the
U.S. Department of Housing and Urban Development and chronic absenteeism from the
U.S. Department of Education.