Function dnbinom

dnbinom<T extends Vectorizable>(
    x: T,
    size: number,
    options: NegBinomialParams & DensityOptions,
): VectorResult<T>
Probability mass function of the negative binomial distribution (number of failures before the size-th success). Equivalent to R's dnbinom(x, size, prob, mu, log = FALSE).

The distribution is parameterized by size and exactly one of prob or mu. With mu, size = Infinity gives the Poisson distribution.
Type Parameters
- T extends Vectorizable
Parameters
- x: T
  Value(s) at which to evaluate: a number, number[] or Float64Array. The result has the same shape.
- size: number
  Target number of successes (need not be an integer).
- options: NegBinomialParams & DensityOptions
  prob or mu (see NegBinomialParams; exactly one is required) and log (see DensityOptions).
Returns VectorResult<T>
The probability (or log probability).
Throws
TypeError unless exactly one of prob and mu is given.
Example
```
dnbinom(3, 5, { prob: 0.5 }); // 0.13671875
dnbinom(3, 5, { mu: 4 });     // 0.16261401187793145
```
- Defined in distributions/negbinomial.ts:380