information about ciboot command
    MARIGO RAFFAELLA 
    R.MARIGO at arpalombardia.it
       
    Wed Mar 30 09:34:06 CEST 2011
    
    
  
Hi,
I'm Raffaella Marigo from Italy, may I have some information about the bootstrap command "ciboot" (stixbox module)
I have some problem because I don't understand the calling sequence: ci = ciboot(x,'T',method,C,B)
In particular, I don't understand the meaning of 'T', is it the shape of the distribution?
I wrote these commands
x=grand(1,1000,"unf",0,323); // N=1000 random numbers  generated from a uniform distribution on [0,323]
bx=rboot(x,[,1000]); //bootstrap resampling
tbx=trimmean(bx,25,2); // trimmed mean calculated for each resampling
mbx=trimmean(tbx) //boostrap trimmed mean
sx=stdboot(tbx,'norm') //median standard error
ci=ciboot(q,'norm',6,0.95,1000)
and the result is:
 -->x=grand(1,1000,"unf",0,323); // N=1000 random numbers  generated from a uniform distribution on [0,323]
-->bx=rboot(x,[,1000]); //bootstrap resampling
-->tbx=trimmean(bx,25,2); // trimmed mean calculated for each resampling
-->mbx=trimmean(tbx) //boostrap trimmed mean
 mbx  =
    159.55854
-->sx=stdboot(tbx,'norm') //median standard error
 sx  =
    3.366777
-->ci=ciboot(q,'norm',6,0.95,1000)
ci=ciboot(q,'norm',6,0.95,1000)
            !--error 4
There is an undefined variable: q
at line       6 of exec file called by :
exec('C:\Documents and Settings\RMARIGO\Impostazioni locali\Temp\SCI_TMP_3564_\LOAD_INTO_SCILAB-2323182087522029687.sce', 1)
while executing a callback
Could you help me?
Thanks a lot
Best regards
Raffaella Marigo
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.scilab.org/pipermail/users/attachments/20110330/71c25c9c/attachment.htm>
    
    
More information about the users
mailing list