The Google Advertising Fundamentals Exam is serious about Ad Rank. It might even ask you twice on the same exam to spot the mathimagical formula:
Google presents Ad Rank as a “formula” which is not an actual formula that can be used to calculate anything, but a mnemonic device meant to make it easier to remember the relationship. It goes like this: Bid x Quality Score = Ad Rank. We cannot use it to solve for anything, like: $1 bid x 5 QS = 5 Ad Rank. That has no meaning.
Certainly the real math behind Ad Rank is much more complicated and not public knowledge. This faux formula can appear in multiple exam questions only asks that we understand that Ad Rank is somehow a combination of bid and Quality Score.
Is their approach to educating us with this non-formula helpful or harmful?