Sampling Techniques Representative

Question 1

Quick definition of Random Sampling

Answer 1

Selected by chance in a hat of names

Question 2

[RS] What should a large enough sample reflect?

Answer 2

Characteristics =
- Gender
- Class

Question 3

[RS] Advantages

Answer 3

• Less chance of bias
• Everyone has an equal chance

Question 4

[RS] Main disadvantage

Answer 4

Probability of picking the same name

Question 5

[RS] Other disadvantages

Answer 5

• Difficulty gaining access to a list of larger population
  Expensive as large sample is required

Question 6

Quick definition of Systematic Sampling

Answer 6

Every nth person in sampling frame is selected

Question 7

[SS] Advantages

Answer 7

• Beneficial to covering a wide study area
• Straightforward

Question 8

[SS] Disadvantages

Answer 8

May not be as diverse

Question 9

Description of Stratified Random Sampling

Answer 9

1) Researcher stratifies population via
- Age, class, gender

2) Sample created in same proportions

Question 10

[SRS] What is meant by same proportions?

Answer 10

A set number for everything.
E.g: 20% boys and 20% girls

Question 11

[SRS] Other advantages

Answer 11

• Lower costs
• Increased precision

Question 12

[SRS] Disadvantages

Answer 12

• Time consuming when splitting pop into sub groups

Question 13

Description of Quota Sampling

Answer 13

1) Population is stratified

2) Interviewer given a quota of participants

3) Interviewers have to fill the quota with respondents that fit the set characteristics

Question 14

[QS] Advantages

Answer 14

Cheaper as there’s less participants
Representative

Question 15

[QS] Disadvantages

Answer 15

Time consuming