RM- Sampling

Question 1

What is random sampling?

Answer 1

Every member or the target has an equal chance of being selected

Question 2

Strength and weakness of random sampling

Answer 2

+ equal chance- no bias

- take a long time

Question 3

What is systematic sampling?

Answer 3

Every nth member of the target population is selected

Question 4

Strength and weakness of systematic sampling

Answer 4

+ avoids researcher bias

- unrepresentative sample

Question 5

What is stratified sampling?

Answer 5

Sample is a proportional representation of the target population

Question 6

Strength and weakness of stratified sampling

Answer 6

+ equal representation

- very time consuming and difficult

Question 7

What is opportunity sampling?

Answer 7

The sampler selects participants from whoever is available at the time

Question 8

Strength and weakness of opportunity sampling

Answer 8

+ easy and quick

- less representative only uses small section of the population

Question 9

What is volunteer sampling?

Answer 9

Participants put themselves forward to be put into the sample

Question 10

Strength and weakness of volunteer sampling

Answer 10

+ quite easy to do

- volunteers are more willing and eager