Configuring Special:Statistics

The latter is $wgActiveUserDays, I don't think that there is a way to do the former.

Thanks for the reply and information. It's too bad about the former - pages like Main Page and Sandbox (as well as some pages that existed but do not any longer) are right at the top of the list and are stubbornly hanging on. Since they're at the top of the list they get viewed more often and become entrenched. Sigh.

Thanks again!