R help - Sep 2010 - How to generate integers from uniform distribution with fixed mean

Hi, folks,

runif (n,min,max) is the typical code for generate R.V from uniform dist.

But what if we need to fix the mean as 20, and we want the values to be
integers only?

Thanks

	[[alternative HTML version deleted]]

On Thu, Sep 2, 2010 at 7:17 AM, Yi <liuyi.feier at gmail.com>
wrote:
> Hi, folks,
>
> runif (n,min,max) is the typical code for generate R.V from uniform dist.
>
> But what if we need to fix the mean as 20, and we want the values to be
> integers only?
 It's not clear what you want. Uniformly random integers with expected
mean 20 - but what range? Any range centred on 20 will work, for
example you could use sample() with replacement. To see the
distribution, use sample()

 table(sample(17:23,10000,TRUE))

 which gives a uniform distribution of integers from 17 to 23, so the
mean is 20.0057 for 10000 samples.

 Is that what you want?

Barry