non random sampling

Question 1

what is opportunity sampling?

Answer 1

a sample is taken from people who are available at the time of study and meet the criteria

• interviewer selects the actual sampling unit according to the set criteria

Question 2

advantages of opportunity sampling

Answer 2

• easy to carry out

- inexpensive

Question 3

disadvantages of opportunity sampling

Answer 3

• unlikely to provide a representative sample

- highly dependant on individual research

Question 4

what quota sampling?

Answer 4

• population divided into groups according to characteristics
• a quota is meant to reflect the whole group

Question 5

advantages of quota sampling

Answer 5

• small sample a still be representative
• no sampling frame is needed
• quick, easy, inexpensive

Question 6

disadvantages of quota sampling

Answer 6

• bias
• a process not random
• population must be divided into groups, costly and inaccurate