https://www.differencebetween.net/language/words-language/difference-between-grouped-data-and-ungrouped-data/attachment/grouped-data-versus-ungrouped-data/
Grouped Data VERSUS Ungrouped Data | Difference Between
grouped dataversusungroupeddifference
https://www.cybrosys.com/odoo/odoo-books/odoo-15-development/ch15/grouped-data/
Ch.15.5 Grouped Data - Performance Optimisation
In some cases need datas on a groped forms, like montly reports, sales reports etc.. like that.Manually searching and grouping records is time-consuming
grouped datachperformanceoptimisation
https://researchers.mq.edu.au/en/publications/quick-powerful-tests-with-grouped-data/
Quick powerful tests with grouped data - Macquarie University
grouped dataquickpowerfultestsmacquarie