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.