predict.psFit: S3 predict method for an object of class `psFit`

Description

S3 predict method for an object of class psFit

# S3 method for psFit
predict(
  object,
  newdata,
  interval = c("none", "prof", "wald"),
  level = 0.95,
  ...
)

either a named vector of fitted probabilities, or a data.frame

with columns predicted, lower, and upper and the row names set to show what terms are being calculatd

object: an object of class psFit, usually from fitDist or fitZIDist.
newdata: an optional vector of integers at which to calculate \(\Pr(X = x)\).
interval: either "none", "prof", or "wald" and can be abbreviated. If "prof" or "wald" AND the zeta model has been used then an interval, based on the bounds of a 100 * level confidence interval for the shape parameter, is given for each predicted probability. The interval is provided based on either a Profile Likelihood, or a Wald, confidence interval for the shape, and therefore cannot really be regarded as a confidence interval for the probabilities. The intervals might be more sensibly regarded as a measure of how sensitive the probabilities are to the choice of shape parameter. NOTE: this parameter is ignored if the Zero-inflated (ZIZ) model has been used.
level: the level of a confidence interval. Ignored if interval == "none".
...: other arguments passed to predict---not used

data(Psurveys)
roux = Psurveys$roux
fit = fitDist(roux)
predict(fit, interval = "prof")

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