Hi Folks,


TLDR: 

Results from analysis of new beta header
I ran the data from the new beta header, which was designed to promote main menu discovery by showing the menu anytime someone clicked in the header.  We knew it was a confusing experience and made it harder to search, but since it was almost built before I joined the team, I asked the team to promote it to beta anyway so that we could see what, if any, the impact was.


Context:

Current:
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Behaviors: 
  • click search, begin typing immediately
  • click hamburger menu, see main menu


Test. Clicking anywhere on the header, including search, will now surface the main menu:
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Behaviors: 
  • click anywhere in the heading and see both search and main menu.  Click search again to begin typing
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Hypothesis:
  • Main menu item clicks will increase
  • Search clicks will decrease
I was personally curious to see how much we could drive main menu clicks--would increased exposure improve visitation? How much would an extra click hurt search?  These answers would help us as we made decisions for a new navigation.  For all of the below, I looked at English Wikipedia only.

Complications/caveats:
  • beta traffic is low (~500 search clicks a day, ~80 settings clicks before the change,) and fluctuates, so impacts measured should be taken with a grain of salt
  • pageview traffic is hard to derive, so I looked at an hour each day and used that as the index against which to measure actions, for stable pvs I also sampled 1/1000
  • there is a period of missing main-menu click data whose impact is fully over by 7/11, so I could only measure the 4 days before the change.  PV data seems limited to a 90 day window (at least the method I am using to query)
  • after the change, there was no measurement  of overall 'header' clicks.
Results TLDR: 
  • when indexed against pageviews, search results did not decreaes!
  • surprisingly, main menu clicks did not have consistent improvements--largely
    • Home: +12%
    • Nearby: -6% (anomalous spike just before)
    • Random: +101% (there is clearly 1 day here with a major spike--just an outlier)
    • Collections: - 20%
    • Settings: + 27% (to change out of beta?)
  • pageviews decreased significantly over this period, however (25% over the two comparison windows). So overall actions did decrease.  How to interpret the results, one has to know why pageviews decreased-- 
    • Certainly one component is looking at partial weeks and different days of the week.  Weekends see mobile spikes and the first portion is a weekend and the second was not. 
    • Did they decrease because of a natural population decay from our pushing more people into beta?  Maybe.
    • Did they decrease because people did not like the header.  Unlikely--we see an opt out of beta jump that starts a few days before the change was promoted.
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(the 3 digit numbers below are dates: 

Here is an example of the total number of actions during this time--a comparison to all traffic (which I dub 'stable') helps identify when a spike is or is not a beta artifact, but ultimately I ended up using pageviews as that is more relevant:


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Here are clicks on "Home" in the main menu:

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Here is search:
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The jumps you see in early May are from a banner campaign we ran to increase beta users so that we could run meaningful quantitative analysis.  

Conclusion:
  • We need to either increase beta users, a/b test, or test in stable more (which would also mean a/b testing on a small % of the population)
  • Increased exposure to the main menu in it's current state does not appear to have a strong positive impact on engagement.  One might argue that this has a great deal to do with an awkward transition, but it is hard to tell with the noise.
  • Search was seemingly not impacted by a trivial extra step--people are possibly more resilient than we think.