@JMinor Thanks for the list of the product questions!

Except the followings, other questions can be answered by mediawiki database:

• Do iPad or iPhone users make proportionally more edits?

I remember the raw user agent strings are saved somewhere.. @Neil_P._Quinn_WMF Do you know about it?

• How many/what percent of users start the description editing process?
• How many/what percent of them make it to the point of saving the edit?
• How many see the revert notification?
• How many read or click through on the revert notification?

These questions would require eventlogging instrumentation. @mpopov Has Android implemented similar schema?

In T203723#4567548, @chelsyx wrote:

• Do iPad or iPhone users make proportionally more edits?

I remember the raw user agent strings are saved somewhere.. @Neil_P._Quinn_WMF Do you know about it?

Yeah, the user agent for each edit is saved for 90 days by the CheckUser extension. The data is available in the MediaWiki tables in each project's cu_changes table, and in the Data Lake in a single wmf_raw.mediawiki_private_cu_changes table 😀

I created T210970 for the instrumentation work.
And since the rest of this task are analysis work for @chelsyx, I removed it from the v6.2 board.

The analysis task is partly done. See the slide deck: https://docs.google.com/presentation/d/1xEKa_iHkg6Rb9UBOlGGG9quZGX7kBhpzhd5lcIhRVrE/edit?usp=sharing

Regarding other questions need to be answered in this task:
1, We need to implement eventlogging to answer the following questions:

• How many/what percent of users start the description editing process?
• How many/what percent of them make it to the point of saving the edit?
• Are their any correlations between completing an edit (or making multiple edits) and other trackable factors, such as device type, primary language or days since install? Ie. are long time readers on iPads more likely to edit these successfully? Not the reason, just the correlations if any...
• How many see the revert notification?
• How many read or click through on the revert notification?

Thee first three can be answer after T210970 is resolved. We still need to create new schema to record notification related behavior, if we want to answer the last two questions above.

2, The following question required table joins across databases, which is doable, but very slow given our current technology. This question is also not critical at this moment to my knowledge. Please let me know if you think differently.

• How many of these users go on to edit in other ways, either on app or desktop?

I'm moving this task back to the backlog.

Moving to blocked as I'm currently waiting for 6.2 release (T210970)