For selected special probability distributions, this app gives the value of the quantile function \(x = F^{-1}(q)\) for a given value of \(q\), where \(F\) is the distribution function. The value \( x \) and the cumulative probability \( q \) are illustrated with the graph of the probability density function and the graph of the distribution function. The special distribution can be chosen from the drop-down box, and the parameters of the distribution can be varied with the scrollbars. Hover over a scrollbar to see information about the type of the parameter. The value of \(q\) can also be varied with the input control.