[R] normality test
Peter Dalgaard BSA
p.dalgaard at biostat.ku.dk
Mon May 28 16:30:56 CEST 2001
Meriema BELAIDOUNI <meriema at info.univ-angers.fr> writes:
> I have used recently the kolmogorov smirnov test,
> which is a test of normality.
> This test is named ks.test() in ctest library of R.
> I wonder if the results of ks.test () are true, because
> the results are strange, time to time.
> thank you for help
You'll need to supply us with harder evidence than that!
(K-S is known to be badly biased in the conservative direction if
parameters are estimated from the data, but you are not even telling
us enough to rule out blatant user errors. Shapiro.test() is a much
better test of normality.)
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch
More information about the R-help