How do you split the Y-axis on an Excel chart?

[RickiRebel]

I've seen this done where the Y-axis is "split" to accommodate a big leap to
a high number (outlier).

 

[Barb Reinhardt]

Take a look at Jon Peltier's Broken Y axis documentation and see if it
helps.

http://www.peltiertech.com/Excel/Charts/BrokenYAxis.html