We ran a test of info-gathering popups on one of my sites a little while back. We split tested using various triggers.

popup after 5 seconds:

- 73.5% left the page without closing the popup.

popup after 10 seconds:

- 75.8% left the page without closing the popup.

popup triggered when the user scrolled near the bottom of the page:

- 21.5% left the page without closing the popup.

The scroll trigger was pretty useless though because only 2.6% of users scrolled low enough to trigger it.

I'm curious... is that 75.8% a bounce rate from the entire site, or just navigating away from the page?

Navigating away from the page, although there was no interaction on the popup that would have kept them on the site so they left entirely.

It should be noted that the traffic to that site at that point was nearly 100% search traffic looking for a specific data point and the content on the page was tables of data, not an article. I would assume that a site with an engaging article would have a much smaller bounce rate.