## Find an $$x$$-value (quantile)

The opposite of finding a probability, given an $$x$$-value, is finding an $$x$$-value, given a probability. The $$x$$-value associated with a certain cumulative probability is also called a quantile.

You can specify a left, right (under the 'pdf' or 'pmf' tab) or cumulative probability (under the 'cdf' tab) and press 'Enter. Then the associated $$x$$-value is shown in the edit field below the horizontal axis.