When collecting data for a research, the two main types of data that are used are primary data and secondary data.
Reasons:
Haley is conducting a research on the prospective students in the area by
making use of data in previous research carried out by government bodies
including the U.S. census bureau which are a third party to Haley's research.
Haley is making use of secondary data, which are data that others have
already collected directly from the source or origin of the data (primary data)
and made available to researchers to use.
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