Hi all!<br>first timer here.<br>I need to find out to what degree (in the form of a P value or r^2) some spectra are similar to each other or different. here is the problem:<br><br><ol><li>I have 10 groups; 10 taxonomic different groups of zooplankton (small marine animals).
</li><li>each group has between 4 and 11 replicates (I measured 4-11 individuals from each specie).</li><li>each replicate is a spectrum; for each replicate the spectrum is composed of a series
of 600 values. 600 light intensity values corresponding to the 600
wavelengths they were measured at. the wavelength spans from 400 to 700 nm.</li><li>I want to know to what degree are these spectra similar to each other within the groups, and between the groups.</li></ol>From eyeballing them I can say that they are pretty similar within the groups in some groups and not so similar in other groups. I can also say that they look rather different from each other between the groups. but I need to know how significant it really is. 
<br>what is the statistically correct thing to do?<br>thanks in advance!<br><br clear="all"><br>-- <br>Yakir L. Gagnon, PhD student <br>The Vision Group<br>Tel&nbsp;&nbsp;+46 (046) 222 93 40<br>Cell +46 (073) 7536354<br>Fax +46 (046) 222 44 25
<br><a href="http://www.student.lu.se/~kem02yga/CV">www.student.lu.se/~kem02yga/CV</a><br><a href="http://www.biol.lu.se/funkmorf/vision">www.biol.lu.se/funkmorf/vision</a>
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