Hey all,

I'm looking for a method to determine the parameters of the distribution of page views per visit. I would also love to know the distribution for the length of time between visits. Does anyone know of any studies already done on this topic? Google is not my friend today -- I haven't yet found anything.

If the data doesn't exist, the best I think I can have is the average number of page views per visit. I have a problem though: the comScore numbers available at http://reportcard.wmflabs.org/ is broken out by region; not by site. Using this data I'll only be able to get the average for all our properties worldwide -- which is a little bit rough. Does anyone have access to the raw data? If so -- does it tell us the number of uniques per site, or is it really only by region?

Does anyone have any better ideas?

Thanks!

-- Context --
I'm trying to model some fundraising data to solve the optimal banner distribution problem (effectively what's the best way to show people banners) . Our data on the 'number of banner impressions till donation' indicates that people are far more likely to donate on the first banner impression. However, this decays over time. My hypothesis is that it's there is no difference between showing a user only one banner per visit over multiple visits and showing multiple banners 100% of the time.

If this hypothesis is true; it will lead into fundraising developing a banner display function that will solve the following problem statement: "show P percent of all unique visitors, under time T, N banners with M banners displayed per session".

~Matt Walker
Wikimedia Foundation
Fundraising Technology Team