In the previous lessons we had a deep dive in marketing ROI. We touched the earnings part of ROI and learned a new technique – grouping and summing.
In this lesson let’s look at the spend or investment part of the ROI.
Usually marketers operate campaigns in Facebook from the Facebook website. All information about campaigns, how much money we spent etc is stored in the database of Facebook. To be able to query this data, we need to import it to our data warehouse first. Pretty much all marketing platforms allow to export data on how much money...