As Cohn says, individual polls are likely to fall on a bell curve. I’ve recreated his chart below, with actual recent polls in blue. As you can see, it’s all perfectly normal (pun intended).

The bell curve model limits the quantity of people at the top and also reduces incentives to the highest rating. Given the arbitrary five-scale rating and the fact that most people are 2,3,4 rated ...

How to Put a Gaussian Curve on a Graph in Excel. Gaussian curves, normal curves and bell curves are synonymous. Each represents how statistical data with normal distribution plots on a graph.

With that, Excel can generate a series of random numbers based on the data entered and the standard deviation. With this data you can then create a curved chart, known as a bell curve.