Best Thing I Read Today

"Analyzing data in aggregate is a crime against humanity."

That's according to Avinash Kaushik, Analytics Evangelist (hey, cool title!) at Google.  He goes on to say:

Bold statement, but the reality is that a “monolith” does not come to your website. Your site does not exist for a singular reason either. The core drivers of traffic are magnificently different for each core group of visitors.

So your website’s really a mix of Visitor Sources, Visitor Behavior and your Desired Outcomes.

When you look at all that in aggregate you get nothing. You think Average Time on Site means something. No! You think All Visits and Overall Conversion Rate gives you insights. Nyet! You think understanding Keywords without drilling down to each search engine will be awesome. Non!

If you want to find actionable insights you need to segment your web analytics data.

(emphasis mine)

The only thing that I'd change is that his comments are applicable to all data, not just web analytics data.  If you want to find actionable insights, aggregations just won't cut it.  You've got to move beyond the cube.

 

Comments

 

Tara Scherder said:

I love that statement!  I've simply referred to  'dangers' of aggregation - like squelching important relationhips and Simpson's paradox.  Avinash Kaushik gives it new dimension!

October 29, 2008 6:11 PM

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About Tim Wormus

In his role as an Analytics Evangelist for Spotfire, a division of TIBCO Software Inc., Tim Wormus is responsible for tracking and analyzing Analytics and Business Intelligence trends, as well as advocating their use and acceptance at Global 200 companies. Tim has published and lectured on analytics, including presenting an analytics tutorial at the Gartner Business Intelligence Summit and appearing on a panel with analytics guru Tom Davenport. His experience has led him to consult on data analysis projects for Global 1000 companies and instruct analysts in the life sciences, manufacturing and energy fields. He maintains a blog that discusses best analytics practices for organizations striving to be best-in-class. Before joining Spotfire, Tim managed the implementation and integration of bioinformatics software in the life sciences industry for Swiss software provider Genedata AG. Prior to that he developed informatics tools to address challenges in the drug discovery process. He earned degrees in Mathematics and Economics from Kalamazoo College, in Kalamazoo Michigan.
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