Sampling Methods Quiz

A researcher stands outside Woodlands MRT station during evening peak hours and interviews the first 30 commuters who agree to participate in her survey about public transport satisfaction. This is an example of:

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

Which sampling method ensures every member of the population has an equal chance of being selected?

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

A geographer studying income levels in Punggol first divides residents into three groups (low, middle, and high income) and then randomly selects participants from each group proportionally. This is an example of:

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

A student researcher needs to interview 100 shoppers at VivoCity, with specific numbers from different age groups: 20 teenagers, 40 adults, and 40 elderly. The student continues interviewing until these numbers are met. This is:

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

Using a computer program to randomly select 200 names from a list of all 5,000 students in a school is an example of:

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

Which sampling method is MOST likely to be affected by researcher bias in participant selection?

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

A researcher studying housing satisfaction in Singapore divides residents by dwelling type (HDB, condo, landed) and randomly selects participants from each category proportionally. This is:

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

Which sampling method requires the researcher to predetermine the exact number of participants needed from each category?

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

A geography student conducting research on food court preferences interviews lunch crowd at their school canteen. This is most likely:

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

In studying residents' satisfaction with neighbourhood facilities, a researcher divides Tampines into four regions and randomly selects 50 households from each region. This is:

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling