What is it?
The converting of a dataset from a list of records to summarised values.
When to use it?
When individual records are not required and aggregated data is sufficient for the purpose.
A charity organisation has records of the donations made, as well as some information about the donors. The charity organisation needs to share the data with its consultant, and determines that sharing aggregated data is sufficient.
|Donor||Monthly income ($)||Amount donated in 2018 ($)|
|Monthly income ($)||No. of donations received (2018)||Sum of amount donated in 2018 ($)|