6.4.2. Sample expansion

Try these first

1. 1.

   What is meant by sample expansion?

   Hint

   Think about why we need to amplify our data.

2. 2.

   Define the expansion factor.

   Hint

   It's a mathematical ratio for data representation.

3. 3.

   What does sample expansion achieve?

   • Accurate survey reflection of total population
   • Reduced survey costs
   • Increased sample size
   • None of the above

   Hint

   Think about how survey accuracy connects to population needs.

4. 4.

   Is the expansion factor calculated using total households minus non-responses divided by total sampled households?

   • True
   • False

   Hint

   Recollect the formula we discussed in class.

5. 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.

   Hint

   Be thorough in applying the formula!

6. 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.

   Hint

   No hint provided