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The Cost and Difficulty Level of Changes

Richard Swinbank has an image for us:

I spent some time working at a property portal, where users could look at online listings of homes for sale or rent, then go on to book a viewing appointment with an estate agent. On one occasion we were asked to build a Power BI report showing:

  • the number of appointments booked by portal users
  • the percentage of appointments where the user had viewed the online listing more than once.

Sounds easy enough, right?

Click through for the image. It makes intuitive sense, but is a good visual depiction of why some data requests are more challenging than others.