﻿ UnivariateDiscreteDistribution.ComplementaryDistributionFunction Method (Int32, Boolean)   # UnivariateDiscreteDistributionAddLanguageSpecificTextSet("LST78939650_0?cpp=::|nu=.");ComplementaryDistributionFunction Method (Int32, Boolean)

Gets the complementary cumulative distribution function (ccdf) for this distribution evaluated at point k. This function is also known as the Survival function.

Namespace:  Accord.Statistics.Distributions.Univariate
Assembly:  Accord.Statistics (in Accord.Statistics.dll) Version: 3.8.0 Syntax
```public virtual double ComplementaryDistributionFunction(
int k,
bool inclusive
)```

#### Parameters

k
Type: SystemInt32
A single point in the distribution range.
inclusive
Type: SystemBoolean
True to return P(X >= x), false to return P(X > x). Default is false.

#### Return Value

Type: Double Remarks
The Complementary Cumulative Distribution Function (CCDF) is the complement of the Cumulative Distribution Function, or 1 minus the CDF. Examples
```// Compute P(X = k)
double equal = dist.ProbabilityMassFunction(k: 1);

// Compute P(X < k)
double less = dist.DistributionFunction(k: 1, inclusive: false);

// Compute P(X ≤ k)
double lessThanOrEqual = dist.DistributionFunction(k: 1, inclusive: true);

// Compute P(X > k)
double greater = dist.ComplementaryDistributionFunction(k: 1);

// Compute P(X ≥ k)
double greaterThanOrEqual = dist.ComplementaryDistributionFunction(k: 1, inclusive: true);``` See Also