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Simpson

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Revision as of 16:05, 14 January 2009 by Westcott (Talk | contribs) (New page: '''''*simpson*''''' These files give the classic Simpson Index of diversity. <math>H_{Simpson} = \frac {\sum_{i=1}^{S_{obs}} {S_i \left ( S_i - 1 \right )}}{N \left( N-1 \right )}</ma...)

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*simpson*

These files give the classic Simpson Index of diversity.


<math>H_{Simpson} = \frac {\sum_{i=1}^{S_{obs}} {S_i \left ( S_i - 1 \right )}}{N \left( N-1 \right )}</math>


For the Amazonian dataset, the Simpson Index is 0.0044.


Example calculations below will be performed using data from the 70.fn.shared file with an OTU definition of 0.03.