A/B Campaign Analysis with Start and End Date Slicers

Awhile back I posted about promotional campaign analysis factoring in seasonal trends. Now let's look at another flavor of campaign analysis: comparing results when a campaign is active versus when it was not. Sometimes this is referred to as "A/B Testing."

Let's start by showing what the results can look like: a report that has two date slicers - one where you select the Start Date of a campaign, and another where you select the End date: