PDFIfc

Assuming that the observations in the array data are from a random sample, this function computes the likelihood function. This is computed using as the sum of the log-likelihood function raised to e. Implementation may want to specify other computationally efficient formulas for this function or (most likely) the sum of the log-likelihood function.

Computes the natural log of the pdf function evaluated at x. Implementations may want to specify computationally efficient formulas for this function.

Returns the f(x) where f represents the probability density function for the distribution. Note this is not a probability.