[R] Bootstrapping for residuals
dwinsemius at comcast.net
Thu Dec 1 00:23:19 CET 2011
On Nov 30, 2011, at 11:31 AM, bubbles1990 wrote:
> Hi, Ive been trying to write a program for bootstrapping residuals
> in R but
> without much success.
> A lecturer wants to predict the performance of students in an end-of-
> physics exam, y. The lecturer has the students results from a mid-term
> physics exam, x, and a mid-term biology exam, z.
> He proposes the following linear model for the end-of-year exam result
> yi = α + βxi + γzi + qi, where q is the error.
> Y is a matrix of the data and we have y=first column of the data and
> X=second 2 columns(the x & z data)
> Now I need to write a program for obtaining bootstrap estimates,
You replied but included no context, a common and not appreciated (in
both senses of that verb) failing in posts from Nabble. My question
would be: bootstrap estimate ... of what?
> i have:
> for(i in 1:b)
> I think the first 8 lines are right but my function might be wrong?
> Any help?
> View this message in context: http://r.789695.n4.nabble.com/Bootstrapping-for-residuals-tp4123657p4123657.html
> Sent from the R help mailing list archive at Nabble.com.
David Winsemius, MD
West Hartford, CT
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