[R] Very basic statistics in R

[David Winsemius]

On May 8, 2013, at 12:55 PM, peter dalgaard wrote:

> 
> On May 8, 2013, at 20:38 , Robert Baer wrote:
> 
>> On 5/6/2013 7:02 AM, arun wrote:
>>  stErr<- sd(vec1)/sqrt(length(vec1))
>> 
>> Or possibly,
>> 
>> stErr<- sd(vec1)/sqrt(!is.na(vec1))
>> 
> 
> You probably intended sqrt(sum(!is.na(...))).

And if 'vec1' has NA's in it, he would also need:  sd(vec1, na.rm=TRUE)

-- 

David Winsemius
Alameda, CA, USA