Per some comments in [[https://www.mediawiki.org/wiki/Topic:T7n9rhko21e3xawy|a thread on mediawiki.org]], there is a suspicion that the deployment of the collapsed language links has decreased the page views to the Ukrainian Wikipedia as a result of some users browsers being configured to Russian, thereby burying the link to the Ukrainian Wikipedia. Our [[https://commons.wikimedia.org/wiki/File:Wikipedia_Portal_AB_Test_of_Collapsing_links_to_Wikipedia_in_other_languages.pdf|previous analysis]] suggests that this suspicion is incorrect, and the [[https://analytics.wikimedia.org/dashboards/vital-signs/#projects=ukwiki/metrics=Pageviews|page views dashboard]] also does not seem to indicate there has been a drop, but we should confirm whether this is really the case using statistical analysis.
**Hypothesis: deployment of collapsed links to wikipedia.org has significantly decrease page views to https://uk.wikipedia.org. ** Let's perform whatever analysis we need to to decide whether to reject or accept this hypothesis.