```
##
#### Potential Scale Reduction
##
##
CalcPSR <- function(ChainMat)
{
## number of scans
n <- dim(ChainMat)[1]
## Between and Within-chain variation
B <- n * var(apply(ChainMat, 2, mean))
W <- mean(apply(ChainMat, 2, var))
## MPV = marginal posterior variance
MPV <- ((n-1)*W + B) / n
## psr = potential scale reduction
PSR <- sqrt(MPV / W)
return(PSR)
}
```

Embedding an R snippet on your website

Add the following code to your website.

For more information on customizing the embed code, read Embedding Snippets.