[R] mean and sd with number of values?

[Martin Kaffanke]

Hi there,

When i do 

mean(fl[1:20], na.rm=T)
sd(fl[1:20], na.rm=T)

I get 20 Results, but now I'd like to know from how many numbers my mean
and sd are calculated.

How to I use the length() for this, or is this possible?

Because there are missing values in some, but not in all columns.  So
there should be a different count of numbers.

Thanks,
Martin

-- 
Ihr Partner für Webdesign, Webapplikationen und Webspace.
http://www.roomandspace.com/
Martin Kaffanke +43 650 4514224
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: Dies ist ein digital signierter Nachrichtenteil
Url : https://stat.ethz.ch/pipermail/r-help/attachments/20080306/c553c221/attachment.bin