What is the main purpose of a research report?

The purpose of a research report is to explain research conducted, the methods used, and the quantitative and qualitative findings in a clear and concise document and format.

To inform the reader by expanding a body of knowledge that they never knew.

Explanation:

The main purpose of a research report is to inform the reader by expanding a body of knowledge that they never knew.

When somebody writes a research paper, a lot of effort of researching things goes into it and the writer explores many questions and answers that he did not know before.

So it is after a lot of researching that the writer of a research report reach to a conclusion by providing the reader information.