# ITimeSpanDistribution..::..GetValueWithCumulativeProbability Method

Gets the Y (distribution) value with the specified X (cumulative probability) value. For example,
if the caller wishes to know what duration will, with 90% certainty, always be greater than or equal
to a duration returned from the distribution, he would ask for GetValueWithCumulativeProbability(0.90);

Note: The median value of the distribution will be GetValueWithCumulativeProbability(0.50);

**Namespace:**
Highpoint.Sage.Mathematics

**Assembly:**
Sage4 (in Sage4.dll)