An occupant commute survey with an 80% res ponse rate revealed 50% of responders

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试卷: LEED AP EB模拟题 C卷[查看]
An occupant commute survey with an 80% res ponse rate revealed 50% of responders take
alternative transportation to work. What is true about the non-responders?
A: All non-responders are assumed to commute in single-occupancy vehicles
B: All of the non-responders are excl uded from the survey results
C: Half of the non-responders are assumed to take alternative transportation to work
D: All of the non-responders are assumed to take alternative transportation to work

参考答案: C

本题解释:
Notes:
See Reference Guide, SS Credit 4, Calc ulations, Option 3, Survey Subjects

When the survey results are greater than 80%, the remaining 20% can be extrapolated.

In this case the response rate was 80%, so the remaining 20% can be extrapolated. Since
half of the respondents take alternative transportation, half of t hose non-responders are
assumed to take alternative transportation.