Investopedia / Nez Riaz The term "bell curve" is used to describe a graphical depiction of a normal probability distribution whose underlying standard deviations from the mean create the curved ...

As seen in the table below ... a continuous probability distribution can contain outcomes that have any value, including indeterminant fractions. A normal distribution, for instance, is depicted ...

In the old days, you used tables of the standard normal distribution to calculate the number of standard deviations (Z) that relate to a cumulative probability of a standard normal distribution ...