[R] How to calculate the prediction interval without knowing the functional form
murdoch.duncan at gmail.com
Mon Jan 4 00:21:10 CET 2016
On 03/01/2016 5:57 PM, Wensui Liu wrote:
> If I have predictions derived empirically without knowing the functional
> form, is there a way to calculate the prediction interval?
As Bert said, this isn't really an R question, but I'd say the answer is
"probably not". The prediction interval depends on the uncertainty of
individual observations, and that isn't usually reflected in
predictions. For example, if y_i is N(mu, sigma^2), and we fit the
model to N observations, all of our predictions will be ybar, and there
will be no indication of sigma.
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