Data Type of Aggregated Farm Records

Total expenditure, total income or total monthly milk yield at a dairy farm are examples of-

Correct Answer: Secondary data

Secondary data is data that has already been collected and compiled by someone else. When totals like monthly milk yield, total income or expenditure are used by an analyst who did not record the individual daily observations, these compiled aggregates are secondary data.

Key Distinction

• Primary data: Daily milk yield recorded directly at the farm → firsthand.
• Secondary data: Total monthly milk yield calculated from those daily records → derived/compiled data.

Note: The same data can be primary for one user (the farmer recording it) but secondary for another user (a researcher using the published summary).