It's actually quite simple to make
How to Make a Bell Curve in Microsoft Excel
Graphs and charts in Excel are a great way to visualize complex data sets, and Bell curves are no exception. They make it easy to analyze a normal distribution, and they’re easy to create in Excel. Let’s see how.
Keep in mind that the purpose of a bell curve goes beyond just making the data pretty. There are many forms of data analysis that can be performed on a bell curve, revealing many trends and characteristics of the data set. For the purposes of this guide, however, we will focus on creating a bell curve, not analyzing it.
Bell curves are only useful for visualizing data sets that are normally distributed. So before we dive into bell curves, let's take a look at what a normal distribution actually means.