I'm trying to calculate FST using the Cockerham & Weir formula, which is significantly more complicated than the standard FST formula given by Wright, but much more accuarte and widely used today. But I keep getting negative results. The results should only range between 0 and 1. Here's a typical example:
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In the above example the populations are identical (which simplifies some of the math), but if I change them and make them a little different it still gives me negative results.
Thanks for any help.