[R] pvalue calculate

Duncan Murdoch murdoch.duncan at gmail.com
Sun Jul 22 23:01:48 CEST 2012

On 12-07-22 3:37 PM, Mary Kindall wrote:
> I have a value
> a=300
> observation (x) = sample(1:50)
> How to find a p-value from this. I need to show that "a" is different fom
> mean(x).
> Thanks

This question doesn't really make sense.  sample(1:50) gives you the 
same sample as 1:50 does, just in a different order.  So the mean is 
guaranteed to be 25.5, which is obviously different from 300.

If you really did have a random sample from some unknown distribution 
and you wanted to test whether the mean of that distribution is 
different from 300, then Henrik's suggestion is reasonable for most 

Duncan Murdoch

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