Hi,
the formula is . The " " is a function called the natural logarithm. You can find this function on scientific calculators (usually, it is on the same key as ).
Margalef's richness index: (S-1)/ln(n), where S is the number of taxa, and n is the number of individuals.
Hi all, this may seem pretty simple to you all, but I admit that when it comes to numbers I struggle.
Please correct me where I (may) be getting this wrong:
[(S-1)/ln] x n = answer
My struggling point is, what is 'ln' I can't seem to find this anywhere (is it simply 1-n?).
Thanks for your help!
Hi,
the formula is . The " " is a function called the natural logarithm. You can find this function on scientific calculators (usually, it is on the same key as ).
hi all,
I was hoping you could tell me the which button I should be pushing on my calculator for the Margalef species richness index.
I have both the Log and In buttons on my calcualtor
is it correct if I type in S-1/Log(n
or is it S-1/In(n
thanks in advance
Adrian
ln, that is, the log to base e button.
Note to members: This thread has contextual relevance to the Advanced Probability and Statistics subforum, even though there is no explicit stats question being asked. eg. see WCS Malaysia Program - Study design and data analysis for more information on this index.