Quote:
Originally Posted by LightningNZ
Rick, do you have a link or some stats to back this up? 20% is a big amount. While I can see that mean with sigma rejection should be superior, I find the 20% value a little hard to fathom.
For instance in my example above, leaving out the bottom two values of 0 (obvious outliers) would result in a mean of 13876.125 - not much different at all from the median value.
-Cam
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Cam,
Using the median effectively ignores much of the data so I don't find it difficult to understand intuitively. One of the more complete analyses I've seen is in the PI doc:
http://pixinsight.com/doc/tools/Imag...tegration.html
See the section on median combination.
Cheers,
Rick.