[R] Average & sample size

[Nordlund, Dan (DSHS/RDA)]

How about 

?weighted.mean

Dan

Daniel J. Nordlund
Research and Data Analysis
Washington State Department of Social and Health Services
Olympia, WA  98504-5204
 

> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-
> bounces at stat.math.ethz.ch] On Behalf Of Pablo Andres
> Sent: Thursday, November 16, 2006 3:22 PM
> Cc: R-help at stat.math.ethz.ch
> Subject: [R] Average & sample size
> 
> Hi there!
> I need a piece of advice obtaining the average of 4 samples from
> different sample sizes.
> lets's see that my numbers are:
> 
> 6,3,6 and 15
> and each one comes from:
> 100,130,125 and 33 sample sizes.
> 
> I need a command in R to solve this!
> I guess it should not be complicated but... it happens to me! jejeje
> Thanks a Lot
> 
> Pablo
> 
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