Question

Write about the sources of secondary data in brief.

Answer 1

There are two major sources of secondary data : 

• Published Source : Various investigation organisations, research organizations, government departments, corporations, collect oral data on various subjects and publish them from time to time. 
• Unpublished Source : Sometimes, the government or other institutions or individuals (especially investigators) collect material associated with important subjects, but they remain unpublished. Such data can be obtained from the papers, documents, registers of the offices or diaries of the investigators.