[R] [FORGED] how to draw the confidence interval
r.turner at auckland.ac.nz
Mon Mar 6 09:08:26 CET 2017
On 06/03/17 19:35, laomeng_3 wrote:
> this is not homework, just a case which I made by myself.
Be that as it may, if you are going to use R you should learn something
about using R, rather than treating it as a magical black box.
There is, as far as I know (not really very far!) no currently existing
function to "draw the confidence intervals". (Well, actually there is
probably one out there somewhere. There is so *much* out there. But
finding it is probably more effort than rolling your own.)
It is actually very easy to roll your own --- I think I could do it in 5
or 10 minutes. But I am *NOT* going to. (a) I am not going to do your
work for you, even if it's not homework, and (b) you will *learn*
something by figuring out how to do it yourself.
Hint: Read up on the functions lines() and segments(). And maybe
arrows(). The function abline() might be of use as well.
Technical Editor ANZJS
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276
> On 2017-03-06 06:47 , Rolf Turner <mailto:r.turner at auckland.ac.nz> Wrote:
> On 04/03/17 19:39, laomeng_3 wrote:
> > hi all I have a question about drawing the confidence interval .
> > For instance,if I want to sample 100 times,and each time,the sample
> > size is 10,and the mean and sd is 15 and 1 respectively .I want to
> > the 100 confidence intervals(as the attachment) .Which function
> > be used to draw the confidence interval ?
> This list does not answer questions about homework.
> (BTW, no attachment came through; only a *very* limited range of file
> types is permitted for attachments).
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