Normal Distribution

One of the most common continuous distributions, a normal distribution is sometimes referred to as a "bell-shaped distribution." If μ is the distribution mean, and σ the standard deviation, then the height (ordinate) normal distribution is given by

A graph of a normal distribution with a mean of 50 and a standard deviation of 10 is shown below.

If the mean is 0 and the standard deviation is 1, the distribution is referred to as the "standard normal distribution."