Most challenging feature in excel

Minimum of 1 post using technologies such as Kaltura, PowerPoint, or any other tool to explain the concepts learned during the week.
Minimum of 1 scholarly source

Initial Post Instructions
This week we went over the different tools that we have available to analyze data in Excel. Share what you learned from this week, what was most interesting, or even what was the most challenging feature for you. Also share as to how you came up with your solutions in the assignments and the type of analysis you decided to use.