Google does not use Google Analytics data for SEO purposes. What they measure are bounces back to the search result list. E.g. User clicks on a search result link, did not like what he saw and clicked the back button after 2 seconds to refine his search or choose another links rom the result list. This shows google that they sent the user to the wrong page (for whatever reason).
Exactly correct, backed up via Google's own search patents, statements, and third-party observations. Google has many ways without analytics to measure this.
