Growth/Analytics updates/Newcomer homepage leading indicators

The Newcomer Homepage was deployed to the Czech and Korean Wikipedias on May 6, 2019. Prior to deployment, we published our Measurement and experiment plan. That plan lays out a set of leading indicators that we'll monitor after deployment in order to learn whether the Homepage works as intended or not.

We monitored the leading indicators regularly during the first month of the experiment and did not find issues that required immediate attention. Table 1 below shows the leading indicators from the Measurement experiment plan together with results from both Wikipedias.

There's one threshold that has been met, modules not being extensively used, and two areas of concern. Below we address these in more detail:


 * Not using a specific module: There are several modules that are not seeing extensive use. For example the Help module, which provides links to help content and a dialogue for posting questions to the Help Desk, is used relatively seldom. At this point we are not particularly concerned about this, as our users might not have an extensive need for this feature when they are on their Homepage.