Sampling

Question 1

Sampling

Answer 1

Sampling is when researchers take a sample from the population for their
observation.

Question 2

Volunteer Sampling

Answer 2

When the researcher posts an advert and people volunteer to be participants in the study.

Question 3

oppurtunity sampling

Answer 3

When a researcher approaches members of the public who are willing and available to participate in the experiment.

Question 4

Systematic Sampling

Answer 4

When researchers select every nth person from the population to participate

Question 5

Random Sampling

Answer 5

When a participant chooses randomly from a full population of people.

Every person within the population has an equal chance of being a participant.

Question 6

Stratified Sampling

Answer 6

Composition of the sampling reflects the proportions of people in certain subgroups within the target / wider population.

Question 7

P+C of Random sample

Answer 7

+ Potentially unbiased

+ Confounding or extraneous variables should be equally divided between the different groups, enhancing internal validity.

• Difficult and Time consuming to conduct

Question 8

P+C of Systematic sample

Answer 8

+ Objective method

• Time consuming
• People who have been selected may refuse which at that point could be a volunteer sample

Question 9

P+C of Stratified sample

Answer 9

+ Representative of the population - high population validity

• Cannot account for every single subgroup

Question 10

P+C OF Opportunity sample

Answer 10

+ Convenient

• Unrepresentative - low population validity

Question 11

P+C of Volunteer Sample

Answer 11

+ Easy and participants are engaged

• Volunteer Bias
• Responsive to cues