See ?fivenum in the stats package. If you just type
stats::fivenum
you will get the code. The crucial calculations are in the last few
lines.
Simon.
On Mon, 2008-08-04 at 16:19 +0930, Fernando Marmolejo Ramos
wrote:> Dear people
>
> I've learnt that by using the "boxplot.stats" command in the
"grDevices" library
> I can get the 5-number summaries of a boxplot, plus other important
information,
> like the confidence interval around the median.
>
> I'm interested in knowing the actual formula to used in that package to
> calculate that confidence interval.
>
> Can someone help me with this?
>
> Cheers,
>
> Fernando
>
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--
Simon Blomberg, BSc (Hons), PhD, MAppStat.
Lecturer and Consultant Statistician
Faculty of Biological and Chemical Sciences
The University of Queensland
St. Lucia Queensland 4072
Australia
Room 320 Goddard Building (8)
T: +61 7 3365 2506
http://www.uq.edu.au/~uqsblomb
email: S.Blomberg1_at_uq.edu.au
Policies:
1. I will NOT analyse your data for you.
2. Your deadline is your problem.
The combination of some data and an aching desire for
an answer does not ensure that a reasonable answer can
be extracted from a given body of data. - John Tukey.