The team of a project with 1,358 total residential units classifies its dwelling

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试卷: LEED AP ND模拟题D[查看]
The team of a project with 1,358 total residential units classifies its dwelling units according to type:

242 - detached residential, large
278 - detached residential, small
342 - townhouses, small
496 - apartments in multiunit building

What is the Simpson Diversity Index?

A: 0.264
B: 0.358
C: 0.736
D: 0.990

参考答案: C

本题解释:
For each unit type, divide the number of units by the total units and multiply that result by itself.

(242 / 1,358) = 0.17 X 0.17 = 0.029
(278 / 1,358) = 0.20 X 0.20 = 0.04
(342 / 1,358) = 0.25 X 0.25 = 0.0625
(496 / 1,358) = 0.36 X 0.36 = 0.13

Now add up the results:

0.029 + 0.04 + 0.0625 + 0.13 = 0.264

And subtract the results from 1.

1 - 0.264 = 0.736 is your index score. >= 0.7 would earn a project 3 points.

Notes:

Reference: NPD C4, Examples