Forum Moderators: phranque
In order to get an "average", you'll need to target a specific "industry" or subset.
For example, I do design for quilt store, I find that most of them have one of two needs - they either simply advertise their store and need maybe 5 pages, or they sell online and need product pages as well. All are similar - most like borders or backgrounds that deal with quilts, quilting, fabrics, many are "flowery", some are not.
For one, it's the intro or index page, a "news" page, 5 pages of books, soon to grow, 3 pages of patterns, 3 of fabrics, 2 of accessories, etc. A large professional site would be much more.
Then in my hobby, there are many sites dealing with antique engines and tractors - totally different needs, look, feel, etc. They want a "manly" site. They want to display photos of their engines or tractors and the shows they've been to.
These are typically small sites, 5 pages, most deal strictly with photo display with some text.
I'd suggest you do a simple search for a word indicating an industry, hobby or area of interest and see what they have in such sites. If you go to sites where they deal with widgets you'll find they have totally different needs than sights that deal with software - different look and feel.
In the end, I expect you'll find there is no such thing as "average", even within a particular industry. You simply need to target a set of needs and find your niche.
Shadows Papa