I want to run a campaign and do a 50-50 volume split with my Target group for A/B Testing.
The split should not be randomized only, but ideally I could make sure that each 50% segment is distributed evently across my geography. But I only have the standard zip code / postal address information in my table, no geolocation or areas.
Is there a clever way to achieve this without having to split into many subsegments "zip code starts with 1", starts with 2....etc.), e.g. by using Cells?