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.

Excel's STDEV formula can automatically calculate the standard deviation of any set of numbers, so you don't have to go through the math yourself.

2] To create a bell curve in excel, we need three values, average, standard deviation, and normal distribution. Let’s calculate the average of the data first.