[R] Huber-white cluster s.e. after optim?

[Rolf Turner]

On 10/04/2008, at 2:02 PM, <Bill.Venables at csiro.au> wrote:

> In many cases a) often looks difficult, but on closer inspection turns
> out to be impossible

I nominate this for a fortune.

	cheers,

		Rolf Turner

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