[R] mean and sd with number of values?

From: Martin Kaffanke <technik_at_roomandspace.com>
Date: Thu, 06 Mar 2008 16:41:06 +0000

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.


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Received on Thu 06 Mar 2008 - 16:46:09 GMT

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