Sampling Methods

Question 1

What is Random Sampling?

Answer 1

• A sample generated by identifying a list of the entire target population and randomly selecting participants from this list
• each member of the target population has an equal chance of being selected

Question 2

AO3: Random Sampling

Answer 2

• High population validity
• Low experimenter bias
• Sometimes low population validity
• Impractical

Question 3

What is Stratified Sampling?

Answer 3

-A sample generated by identifying a list of the entire target population as well as the characteristics which are important to the research, before randomly selecting a ratio that reflects the group

Question 4

AO3: Stratified sampling

Answer 4

• High population validity
• Low experimenter bias
• Sometimes low population validity
• Impractical and difficult to achieve

Question 5

What is Systematic sampling?

Answer 5

-A sample generated by identifying a list of the entire target population before specifically selecting every nth participant

Question 6

AO3: Systematic sampling

Answer 6

• High population validity
• Low experimenter bias
• Sometimes low population validity
• Impractical

Question 7

What is Opportunity sampling?

Answer 7

-A sample generated when participants take part in research based on their availability at the time of the study

Question 8

AO3: Opportunity sampling

Answer 8

• Practical
• Ethical
• Low population validity
• High experimenter bias

Question 9

What is Volunteer sampling?

Answer 9

-A sample generated when participants self-select or volunteer to take part in research, normally inn response to an advert

Question 10

AO3: Volunteer sampling

Answer 10

• Practical
• Ethical
• Low population validity
• High volunteer bias