Which of the following terms best describes data that were originally collected at an earlier time by a different person for a different purpose?

Data collected earlier by a different person for a different purpose are secondary data.

Primary data are gathered firsthand by the researcher for the present study.

Experimental data arise from a controlled experiment run by the researcher.

Nominal data name a level of measurement, not the source or history of the data.

Secondary sources include census reports, records, and earlier survey datasets.

They save time and cost but may not fit the new study's exact needs.