What is the main difference between primary data and secondary data? Provide one example of primary data and one example of secondary data.

See below

Explanation:

Primary data is the information that a researcher collects from the sample size for use in the current study. Primary data is information gathered for the first time. It is meant to provide answers to research questions developed by a researcher in ongoing research.  For example, a businessperson may administer questionnaires to determine the level of customers' satisfaction with a new product.

Secondary data is information collected by somebody else for a different purpose but is useful in the current study. The researcher does not collect secondary data but finds it relevant in the present study. For example, a business that sells toys may want to estimate the demand for its products by finding out the number of children in a particular geographical area. The business may refer to the census data for such information.