Group By

Put data in categories and perform math within groups

The Group By Actions is very used. It distributed data into certain groups (hence the name group by) and lets you aggregate some values within those groups. So "group by customer type average session_length" could be translated to human language as "put our data in the customer_type groups and provide an average of the session length". Group by's are used all the time and if you want an idea of they look in action, see the video below.

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