[R] Need help on a R script part

[Hugo Mildenberger]

Lusk, 

if I were in your business, I would tackle such a problem with 
help from a little formatting ...

  e1=x1-mean(x1)
  e2=x2-mean(x2)
  n1=length(x1)
  n2=length(x2)
  N=(n1 + n2)
  nu2=sum( c(  ( x1 -mean(x1)  )^2 , ( x2-mean(x2)  )^2  ) )/N
  ss=c(e1,e2) 
  b3=N*sum(ss^4)/(sum( ss^2)^2)

  for(j in 1:B){ ss11=sample(x1, n1, replace=TRUE) 
                      ss12=sample(x2, n2, replace=TRUE) } 


... afterwards I'd correct for missing parenthesis and such. But I 
understand that this approach was really not conducive when the 
main intention was to target the public by giving the unhappy college 
student who infelicitously bumped into a mountain of WWI-style 
razor wire. The wire-cutter equivalent tool the R interpreter provides 
you with is the question mark. Here are some examples how to use it:

?mean
?length
?sum
?sample
?"^"
?"for"
?"in"
?":"
?"="
?"-"
?"+"
?"*"
?"/"


Hope this helps.

Kind regards




On Friday 24 June 2011 15:31:44 Lusk Aris wrote:
> 
> Hi all,
> I need all your help on this. I have the next part of code:............e1=x1-mean(x1)e2=x2-mean(x2)n1=length(x1)n2=length(x2N=(n1 + 
n2)nu2=sum( c(  ( x1 -mean(x1) )^2 , ( x2-mean(x2) )^2  ) )/Nss=c(e1,e2) b3= N*sum(ss^4)/ (sum( ss^2)^2)............what do lines 6-8 (mathematical 
notation)?Also the, what means part?............for(j in 1:B){ ss11=sample(x1, n1, replace=TRUE) ss12=sample(x2, n2, replace=TRUE) 
............}............????I would appreciate you could help on my inquiry, and I am awaiting for your soon answer Thx in advance, Lusk 		 	   		  
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