Click or drag to resize

LogisticDistributionRightProbability Method

Returns the cumulative probability to the right of (above) the given point.

Namespace:  Meta.Numerics.Statistics.Distributions
Assembly:  Meta.Numerics (in Meta.Numerics.dll) Version: (
public override double RightProbability(
	double x


Type: SystemDouble
The reference point.

Return Value

Type: Double
The integrated probability Q(x) = 1 - P(x) to obtain a result above the reference point.

In survival analysis, the right probability function is commonly called the survival function, because it gives the fraction of the population remaining after the given time.

If you want a right-tailed probability, it is better to call this method directly instead of computing 1.0 - LeftProbability(x), because the latter will loose accuracy as P(x) gets close to 1. (In fact, in the far right tail where Q(x) < 1.0E-16, it will give 0.0, whereas this method is likely to give an accurate tiny value.)

See Also