Discover what a log-normal distribution is, its financial applications, and how to calculate it, including using Excel for ...

In this article we review two historical approximations to the Poisson and binomial cumulative distribution functions (CDFs); that is, the Wilson—Hilferty and Camp—Paulson approximations. Both of ...

This video describes the central limit theorem and some properties of the normal distribution. Understanding this will help you tie together many of the different types of hypothesis tests and ...

This paper is a sequel to two previous papers on the subject of the Folded Normal Distribution appearing in Technometrics, 3, pp. 543-550 and 551-562, (1961). In these earlier papers methods for ...

When using a normal distribution, statisticians typically measure out two standard deviations from the mean in either direction, since this covers 95% of the observations in a normal distribution.

With years of data from professional Dota 2 in our hands, we take a look at how closely games adhere to a normal distribution, also known as the bell curve.