If you wanted to know how many standard deviations encompass 15.8% (13.6% + 2.1% + .1%) of the distribution, you could look at the graph and see it is a -1 standard deviation. Why is it -1?

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. For this, enter the following ...

The Role of Probability Distribution in Business Management. Future events are far from certain in the business world. ... How to Find the Y-Intercept of a Line of a Graph in Excel on a Mac.