IB ESS Unit 2: Ecosystems & Ecology (id: 79c4d0e9e)

本题目来源于试卷: IB ESS Unit 2: Ecosystems & Ecology，类别为 IB环境系统与社会

[单选题]
Figure: Species data fg8 -rkemf pn/(or two samples of Wif+8 yg*ky5 ub(yke 3izllow Creek




Use the formula to calculate Simpson’s Diversity Index for the north sample.

A. 6
B. 5
C. 0.2
D. 0.17


参考答案:  B


本题详细解析:

D = $\frac{302(301)}{26(25)+33(32)+7(6)+55(54)+90(89)+3(2)+76(75)+2(1)+10(9)}$
D = 9090218256
D = 4.979
D = 5.0

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