# dmixnegbinom

From LPsmooth v0.1.0
by Xiangyu Zhang

##### Probability mass function of a mixture of negative binomials

Computes the probability mass function of a mixture of the negative binomials.

- Keywords
- Mixture of negative binomials

##### Usage

`dmixnegbinom(x, pis, size, probs)`

##### Arguments

- x
A scalar or vector of non-negative integer values.

- pis
A vector collecting the mixture weights. See details.

- size
A postive value corresponding to the target for number of successful trials.

- probs
A vector collecting the probabilities of success for each mixture component.

##### Details

The argument `pis`

is a vector with length equal the number of components in the mixture. The vector `pis`

must sum up to one, e.g. `c(0.7, 0.2, 0.1)`

.
All the negative binomials contributing to the mixture are assumed to have the same `size`

.

##### Value

Value of the probability mass function of the mixture of negative binomials evaluated at `x`

.

##### See Also

##### Examples

```
# NOT RUN {
xx<-seq(0,30,length=31)
dmixnegbinom(xx,pis=c(0.3,0.6,0.1),size=25,probs=c(0.3,0.4,0.2))
# }
```

*Documentation reproduced from package LPsmooth, version 0.1.0, License: GPL-3*

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