Practice Sample Expansion (6.4.2) - Data Collection - Transportation Engineering - Vol 1

Practice: Sample expansion

Lesson 6.4.2Data Collection

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9 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is meant by sample expansion?
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Think about why we need to amplify our data.
Question 2.
Define the expansion factor.
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It's a mathematical ratio for data representation.
3Question 3.
What does sample expansion achieve?
- Accurate survey reflection of total population
- Reduced survey costs
- Increased sample size
- None of the above
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Think about how survey accuracy connects to population needs.
4Question 4.
Is the expansion factor calculated using total households minus non-responses divided by total sampled households?
- True
- False
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Recollect the formula we discussed in class.
Question 5.
A researcher collected data from 150 households in a community of 1200. 30 households did not respond. Calculate the expansion factor and discuss how this information can impact urban transportation planning.
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Be thorough in applying the formula!
Question 6.
You are tasked with adjusting survey data due to an underestimation of survey responses. If your initial calculated expansion took into account 15% non-responses, but further analysis shows this should actually be 25%, recalculate the factor and discuss potential outcomes.
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No hint provided

5 more questions in this section. Enroll free to practise them all.