sampling

Question 1

Opportunity sampling

Answer 1

Participants selected based on availability

Question 2

Opportunity sampling
Advantages and disadvantages

Answer 2

+ Fastest way, reduces time and costs
- researcher bias(select participants for desired result)
-unrepresentative(easy access)

Question 3

Random sampling

Answer 3

Eaxh sample has an equal chance of being selected

Question 4

Random sampling
Advantages and disadvantages

Answer 4

+Avoids researccher bias
+easy way of sampling
-unrepresentative of all minority groups
-difficult and time consuming

Question 5

Stratified sampling

Answer 5

Dividing subjects into subgroups/strata based on shared characteristics

Question 6

Stratified sampling
Advantages and disadvantages

Answer 6

+Representative of target pop
+Random chosen within each stratum
-Not every characteristic will be represented
-Time consuming to establish strata then select

Question 7

Systematic sampling

Answer 7

Select participants of the population at regular intervals

Question 8

Systematic sampling
Advantages and disadvantages

Answer 8

+Avoids researcher bias
+If list already exists of targets=quick
-Unrepresentative sample
-Big target pop, too hard

Question 9

Volunteer sampling

Answer 9

Researchers seek volunteers to participate

Question 10

Volunteer sampling
Advantages and disadvantages

Answer 10

Easy sample to collect-self presented
Reach a large no of potential participants
Generalisability to target population?- Volunteers have diff characteristics
Volunteer bias- friendlier, more freetime