lndIChisq {bayesm} | R Documentation

## Compute Log of Inverted Chi-Squared Density

### Description

`lndIChisq` computes the log of an Inverted Chi-Squared Density.

### Usage

    lndIChisq(nu, ssq, x)

### Arguments

`nu` | d.f. parameter
`ssq` | scale parameter
`x` | ordinate for density evaluation

### Details

Z= nu*ssq/chi^2_{nu}, Z ~ Inverted Chi-Squared.
`lndIChisq` computes the complete log-density, including normalizing constants.

### Value

log density value

### Warning

This routine is a utility routine that does not check the input arguments for proper dimensions and type.

### Author(s)

Peter Rossi, Graduate School of Business, University of Chicago, Peter.Rossi@ChicagoGsb.edu.

### References

For further discussion, see Bayesian Statistics and Marketing by Rossi, Allenby and McCulloch, Chapter 2.
http://gsbwww.uchicago.edu/fac/peter.rossi/research/bsm.html

### See Also

`dchisq`

### Examples

    ##
    lndIChisq(3,1,2)

[Package bayesm version 2.0-8 Index]