We would need to know what data in order to respond to this question.
Any kind of data can be collected.
The data collected does not have to be measurable.
Data that is collected may have been collected previously for some reason, or it might have been collected recently. Data is usually collected to show statistics or information about something specific.
The collected data is organized in a fashion so you can determine if the hypothesis is supported.
In continuous grouped data the data is collected continuously and in groups. Data collected is in class intervals the actual data values are not visible.
Relational databases like MySQL, PostgreSQL, Oracle, and SQL Server store data in tabular format, commonly referred to as tables. These tables consist of rows and columns, with each row representing a record and each column representing a different attribute or field of that record.
Calculations or comparisons made using the collected data
You may be thinking of 'anomaly'.
how is data collected and used for the purpose of national statistics
Primary data is the the data that collected by yourself. While secondary data is those collected by others and to be reused by yourself.
Primary data is data that is collected by the researcher. Secondary data is information that has been collected by someone other than the user.
data collected over several time periods is what type of data?