there's a merchant member here who doesn't post that often anymore, but in addition to his years of experience running a
sign business, he has also created a business and website devoted to helping other
sign companies with marketing & business structure aids of various kinds... templates, forms & flyers etc...
I was advised my a marketing consultant (Jon Aston, also a merchant here) to consider purchasing a set of templates called the
Sign Planning Guide. I invested my $29 bucks, and ended up spending dozens of hours tweaking it to more specificaly represent my company.
A few pages of his templates talk about statistical comparisons between signage, TV Radio & print advertising.
I had posted a
thread or two to show others here what I was doing with the templates I bought from SignExpert.com & to ask for feedback on improving my version before i printed & bound some as a sales tool & formally offered it for download from my web site.
I don't know if my thread might have been the one, but it has a link to the "signexpert" and he has other stuff too, that might include what you are looking for.