On 12-01-11 5:12 AM, peter dalgaard wrote:
On Jan 10, 2012, at 18:11 , AlanM wrote:
I have to disagree with what's been posted, but I think some very interesting
points have been addressed. I'd like to add my two cents.
Consider the pair {X, 1-X} where X is sampled from a uniform(0,1)
distri
On Jan 10, 2012, at 18:11 , AlanM wrote:
> I have to disagree with what's been posted, but I think some very interesting
> points have been addressed. I'd like to add my two cents.
>
> Consider the pair {X, 1-X} where X is sampled from a uniform(0,1)
> distribution. The quantity 1- X also co
AlanM said,
"Consider the pair {X, 1-X} where X is sampled from a uniform(0,1)
distribution. The quantity 1- X also comes from a uniform(0,1)
distribution and therefore is probabilistic and not deterministic. The
sum of independent random variables is itself a random variable. If X1,
X2 & X3 a
I have to disagree with what's been posted, but I think some very interesting
points have been addressed. I'd like to add my two cents.
Consider the pair {X, 1-X} where X is sampled from a uniform(0,1)
distribution. The quantity 1- X also comes from a uniform(0,1) distribution
and therefore is
Hello,
David is obviously right:
David Winsemius wrote
>
> If the sample space is defined, for instance,
> as the set of all positive integers whose sum is 100, then it might be
> possible to say that one randomly drawn instance of such a 4-tuple
> would be "4 random numbers". What I mea
This question *screams* for the standard response: "What is the problem
you are trying to solve?"
I can think of two related problems off the top of my head.
1) Write a function which generates the four bridge hands from a
well-shuffled deck.
2) Throw 100 pennies into a big "shaker" with fo
On Jan 9, 2012, at 10:27 AM, David Winsemius wrote:
On Jan 9, 2012, at 10:06 AM, arunkumar wrote:
Hi
I want to generate 4 random number which sum up to 100 always
"Random" plus condition == "non-random"
An offlist correspondent has disputed this and I can admit that I was
perhaps t
Try
foo <- function(n){
x <- runif(n)
x * 100 / sum(x)
}
foo(4)
HTH,
Jorge.-
On Mon, Jan 9, 2012 at 10:06 AM, arunkumar <> wrote:
> Hi
> I want to generate 4 random number which sum up to 100 always
>
> Please help
>
>
> -
> Thanks in Advance
>Arun
> --
> View this message in
try this:
> x <- matrix(runif(100), ncol = 4)
> # now scale each row to add up to 100
> x.new <- t(apply(x, 1, function(.row) .row * 100 / sum(.row)))
>
>
> x.new
[,1] [,2] [,3] [,4]
[1,] 25.868978 31.4867075 34.547444 8.0968705
[2,] 35.803781 28.3485728 27.177462 8
On 09/01/2012 10:27 AM, David Winsemius wrote:
On Jan 9, 2012, at 10:06 AM, arunkumar wrote:
> Hi
> I want to generate 4 random number which sum up to 100 always
"Random" plus condition == "non-random"
Perhaps you want 3 "random" numbers conjoined to the difference of
their sum and 100?
On Jan 9, 2012, at 10:06 AM, arunkumar wrote:
Hi
I want to generate 4 random number which sum up to 100 always
"Random" plus condition == "non-random"
Perhaps you want 3 "random" numbers conjoined to the difference of
their sum and 100? Or perhaps you want 4 "random" numbers multiplied
On Mon, Jan 9, 2012 at 10:06 AM, arunkumar wrote:
> Hi
> I want to generate 4 random number which sum up to 100 always
>
> Please help
This sounds like homework.
But you might want to search rseek.org for information on random
numbers, and to ponder the mysteries of addition and division.
S
Hi
I want to generate 4 random number which sum up to 100 always
Please help
-
Thanks in Advance
Arun
--
View this message in context:
http://r.789695.n4.nabble.com/runif-with-condition-tp4278704p4278704.html
Sent from the R help mailing list archive at Nabble.com.
13 matches
Mail list logo
