Question

.. Primary data is also called​

Answer 1

Answer:

Primary data is a type of data that is collected by researchers directly from main sources through interviews, surveys, experiments, etc. Primary data are usually collected from the source—where the data originally originates from and are regarded as the best kind of data in research.

Answer 2

Answer :

The data collected by the investigator himself With a Definite plan is called primary data .

So I think the correct answer is:

Self collected data.