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Re: census stats (was Re: Fp. oeseri )
>Look at the sample: what is the spread between the number of
>species maintained per person.
. If you are not getting a bell curve with an even spread
>then you know the sampling is out. If the curve is really skewed then no
>real
>conclusions can be made other than a better sampling is needed.
>
Why would we expect the number of species to be normally distributed? I
can think of several reasons to expect that it wouldn't be, but rather
closer to a poisson distribution almost (as in, it's much easier to deviate
from the mean below it than above it, given what constraints we all face on
time and space.
>Perhaps you should make a
>few predictions and then ask (nicely) for people to get back to you
>and then count how many people actually have Fp. oeseri or
>mimbon...
>
>Tyrone Genade
Actually, I think that's part of the plan: publish the list of rare species
and hope folks come forward saying: "
hey, Tom, that's not rare, everyone on my block has them"
Doug
Doug Karpa-Wilson
1821 S. Maxwell St.
Bloomington, IN 47401
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