This ticket is to do a "quick" data comparison of older data collected for A/B tests (or otherwise retrieved) with the latest A/B test that was run for the languages by article count.

We have at least two valid data sets to look at: one data set from November 2015 that was collected before any changes were made to the wikipedia.org portal page; and a data set that was collected after we launched the new search box in March 2016.

I'd like to see the comparison, using the typical measurements that we have now (click-through events, what links were clicked on, inaction on the page, etc) and compare what we saw in our last A/B test to the older data.

The goal of this comparison is to determine what the overall changes are to these metrics to show (via data) that the A/B tests are effective at helping visitors to do what they want/need to do on the portal page.