MathProbabilityDensityNegativeBinomial

Calculates the value of the probability mass function of negative binomial distribution with the r and p parameters for a random variable x. In case of error it returns NaN.

double  MathProbabilityDensityNegativeBinomial(
   const double  x,             // value of random variable (integer)
   const double  r,             // number of successful tests
   const double  p,             // probability of success
   const bool    log_mode,      // calculate the logarithm of the value, if log_mode=true, then the natural logarithm of the probability density is calculated
   int&          error_code     // variable to store the error code
   );

Calculates the value of the probability mass function of negative binomial distribution with the r and p parameters for a random variable x. In case of error it returns NaN.

double  MathProbabilityDensityNegativeBinomial(
   const double  x,             // value of random variable (integer)
   const double  r,             // number of successful tests
   const double  p,             // probability of success
   int&          error_code     // variable to store the error code
   );

Calculates the value of the probability mass function of negative binomial distribution with the r and p parameters for an array of random variables x[]. In case of error it returns false. Analog of the dnbinom() in R.

bool  MathProbabilityDensityNegativeBinomial(
   const double& x[],            // array with the values of random variable
   const double  r,              // number of successful tests
   const double  p,              // probability of success
   const bool    log_mode,       // flag to calculate the logarithm of the value, if log_mode=true, then the natural logarithm of the probability density is calculated
   double&       result[]        // array for values of the probability density function
   );

Calculates the value of the probability mass function of negative binomial distribution with the r and p parameters for an array of random variables x[]. In case of error it returns false.

bool  MathProbabilityDensityNegativeBinomial(
   const double& x[],            // array with the values of random variable
   const double  r,              // number of successful tests
   const double  p,              // probability of success
   double&       result[]        // array for values of the probability density function
   );

Parameters

x: [in] Value of random variable.
x[]: [in] Array with the values of random variable.
r: [in] Number of successful tests
p: [in] Probability of success.
log_mode: [in] Flag to calculate the logarithm of the value. If log_mode=true, then the natural logarithm of the probability density is returned.
error_code: [out] Variable to store the error code.
result[]: [out] Array for values of the probability density function.

Last updated on 2026-07-24

MathCumulativeDistributionNegativeBinomial