Tableau Tip: Watch Out for Misleading Average Lines!

Tableau’s Analytics pane allows you to slap an average line onto your view. Drag, drop, done?

Not quite. In this blog, I will show you an example of when the average line Tableau creates for you may not be doing what you think it does.

 

Let’s start

So Figure 1 below shows a vertical bar chart with the height of each bar indicating the number of customers that fall into each number of orders bucket. For example, 134 customers have ordered 5 times; 1 customer has ordered 17 times.

 

Fig 1. A vertical bar chart showing how many orders customers have

 

Click to keep reading!