When registering an datasource account, I saw the response as below
"Will your research present data individually or in aggregate?
I am wondering what does "data individually or in aggregate" here mean to answer them.
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Data aggregation is a process where you express data in some summary form.
For example, if you have data on output of 10 firms for 30 years 1970-2000, and you calculate mean output for every single year and turn the panel data into time series, you are engaging in data aggregation. If you would plot the single time series for average output per year you are presenting aggregate data.
If you would keep it as panel data, you would be reporting them individually.
Also, note aggregation does not simply means turning panel data into time series. If you would have employee level data on output of all employees for those 10 firms, then just by calculating output of the firm you would already be aggregating the data. Aggregation is again some process that expresses the data in summary form (e.g. average, sum, median etc.).