Normal distribution related calculation

This page performs calculations on the normal distribution, including standard normal distribution
functions and inverse functions, general normal distribution functions and inverse functions, some
probabilities, upper a quantiles, and so on.
In the list in the upper right corner, select the option you want to calculate, fill in the required
parameters below, and click the "Start Calculation" button.

Note that when entering the standard deviation, you can also start with a lowercase letter q followed
by a variance number. For example, "q4" means that the standard deviation is 2, the variance is 4, and
the effect is the same as direct input 2.