Originally Posted by
Excargodog
Warnings may OR MAY NOT affect outcomes. With UNIVERSAL warnings it is an ‘n’ of one event with zero degrees of freedom.
Statistically, that can’t be assessed one way or another.
In advertising, people are always looking for ways to quantify Return on Investment. There's no direct way to say x billboard led to y purchase.
After all the surveys and extrapolation, you just have to go on faith that it works.
Don't try to squirm your way out with semantics.