[R] Different results in calculating SD of 2 numbers

[Jim Lemon]

(Ted Harding) wrote:
> On 16-Jan-08 08:45:04, Martin Maechler wrote:
> 
>>>>>>>"RM" == Ron Michael <ron_michael70 at yahoo.com>
>>>>>>>    on Wed, 16 Jan 2008 00:14:56 -0800 (PST) writes:
>>
>>    RM> Hi all,
>>    RM> Can anyone tell me why I am getting different results in
>>calculating SD of 2 numbers ?
>>
>>    >> (1.25-0.95)/2
>>    RM> [1] 0.15
>>    >> sd(c(1.25, 0.95))
>>    RM> [1] 0.2121320          # why it is different from 0.15?
>>
>>because  1 is different from 2 !
>>If 2 was 1, than sqrt(2) == 1 as well, but actually I don't
>>think the universe and we all would exist in that case ....
>>Martin Maechler, ETH
> 
> 
> Of course we would!! -- Since FALSE implies X is TRUE for any X.
> 
> But FALSE would also imply that X is FALSE, so you are entitled
> to your view as well, Martin.
> 
Then again, as pi might have been equal to 1 prior to the Big Bang, I 
see no reason why sqrt(2) shouldn't have been equal to 1 as well. After 
all, in those days we were all one...

Jim