Its an oft quoted phrase in Hollywood for people to say that they "Know the figures". That is - that they know the audience, who will turn up, who will open their wallet, or purses.
Here is the IMDB ratings for Eight. Great! What do these figures mean though. I'm none the wiser really. Does anyone really know the figures? Should they?
If you always try to second guess the audience, wrangle the demographics and agonise on how this relates to the industry you will always fail. Your story must to true to itself. This is for three reasons:
One: Artisically you will feel better about writing what you want to write
Two: From an industry point of view they have moved on. Why are you writing a 'My Name is Earl' clone? Yes. Its fresh for us. But for TV people its old news. They want the next thing.
Three: A smaller market. Get youtself into a smaller market. I don't even know if there is a market for a Medieval Western or not. But I do know that I'm at the top of my market. I don't have to spell out the small detail of where my idea is different from the last 10 scripts that landed on their desk. My genre is original in itself!
So, perversly, ignore the figures to be better at marketing your script!
Picture: After Eight. Jack Langan-Evans and Mark E'von after an awards ceremony back in 1998.