What are the 2 sources of data and briefly explain each?

The two primary sources of data are primary and secondary data. Primary data is collected firsthand by researchers for a specific purpose, often through methods such as surveys, interviews, or experiments, ensuring its relevance and accuracy. Secondary data, on the other hand, is information that has already been collected and published by others, such as reports, academic papers, or databases, which can be used for analysis but may require careful validation for relevance to the current research context.