The Economic Research Service of the U.S. Department of Agriculture provides information on topics from how many dairies there are in the United States to how many pounds of broccoli were eaten per person in 2016. This service provides

external secondary data

Explanation:

Secondary data is information collected by other people or other sources. The most common secondary data sources are national censuses, sales reports, economic reports, etc.

This type of data is very useful because it can help us to reduce the costs of a marketing research or other types of studies. A lot of information can be found on the internet, but you must try to use only the information that comes from reliable sources.