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.