GIEL Topic 3 Revision

What is primary data?

• Data that is collected first hand

• Data that is collected by someone else

What are examples of primary data?

• Photographs taken by researchers

• Textbooks

• Response from close-ended questionnaire surveys

• Satellite images

What is secondary data?

• Data that is collected first-hand

• Data that is collected by someone else

What is quantitative data?

• Data that can be measured

• Data that are not easily measured and is subjective in nature

Answer explanation

Quantitative data are data that can be easily quantified and measured.

Qualitative data are Data that are not easily measured and is subjective in nature .

What are examples of quantitative data?

• responses from closed-ended questions

• Field sketches

• Responses from open-ended questions

Answer explanation

Examples of quantitative data are responses from closed-ended questions and pedestrian count.

Examples of qualitative data are open-ended responses, semi-structured interviews and field sketches.

Using a random number generator, students choose the respondents they want to survey.

What is this sampling method?

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

Students want to ensure that they choose equal number of males and females respondents for their survey. They then use random sampling to select samples in each subgroup.

What is this sampling method?

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

Students want to ensure that they choose equal number of males and females respondents for their survey. They then use convenience sampling to select samples in each subgroup.

What is this sampling method?

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

Students choose their friends and anyone close to them to do their survey.

What is this sampling method?

• Simple random sampling

• Stratified random sampling

• Convenience sampling

• Quota sampling

Why is quota sampling more reliable than convenience sampling?

• Quota sampling is highly random

• Quota sampling ensures mix of respondents, which considers diversity of population.

• Quota sampling has subgroups.