R help - Apr 2003 - Getting rate of return

Dear R help.
I have a beginner's question to ask you. I faced a difficulty in getting 
rate of return for some target data.
I finished data importing and some manipulations. but I have any idea after 
that.
Anyone who answer this question?

Thanks in advance

Park H.J

# Hi,

# define as r the revenue and as c the cost
# for example:
r<- 60
c<- 50
# function to obtain the rate of return:
ror<- function(r,c){
foo<- r/c-1
return(foo)
}
# the command ror(r,c) gives you the required rate of return
ror(r,c)

best regards

s.







On 30 Apr 2003 at 5:26, Progressive Economist wrote:



Dear R help.
I have a beginner's question to ask you. I faced a difficulty in
getting rate of return for some target data. I finished data importing
and some manipulations. but I have any idea after that. Anyone 
who
answer this question?

Thanks in advance

Park H.J

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R-help at stat.math.ethz.ch mailing list
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salvatore barbaro
department of public economics
platz der g?ttinger sieben 3
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tel.: +49 551 3919704
fax:  +49 551 39 7353
http://www.gwdg.de/~sbarbar

In a message dated 4/30/03 3:07:18 AM Eastern Daylight Time, sbarbar@gwdg.de 
writes:
> # Hi,
> 
> # define as r the revenue and as c the cost
> # for example:
> r<- 60
> c<- 50
> # function to obtain the rate of return:
> ror<- function(r,c){
> foo<- r/c-1
> return(foo)
> }
> # the command ror(r,c) gives you the required rate of return
> ror(r,c)
> 
> best regards
> 
> s.
> 
Hi there. Be more specific---and even that my not be enough.  What is it that 
you are trying to do in R?  This is a trick question. Read some good book on 
finance/financial accounting. How you calculate rate of retun depends on the 
the project. The above formula works under very (very) restricted assumptions 
and very (very) simple situations. People are still writing doctoral 
dissertations on it.
---anupam.

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