non-random sampling

Question 1

what are the two types of non random sampling?

Answer 1

quota, opportunity

Question 2

What is quota sampling?

Answer 2

when an interviewer selects a sample that reflects the characteristics of the whole population.

Question 3

How do you carry out quota sampling?

Answer 3

. divide the population into groups according to a given characteristic.
. the size of each group determines the proportion of the sample that should have that characteristic.

Question 4

What is opportunity sampling?

Answer 4

it consists of taking the sample from people who are available at the time the study is carried out and who fit the criteria that you are looking for.

Question 5

What are the advantages of quota sampling?

Answer 5

. no sampling frame required
. quick
. easy
. inexpensive
.allows a small sample to be representative of the whole population

Question 6

What are the disadvantages of quota sampling?

Answer 6

. could be biased
. non-responses are recorded
. population must be divided into groups which can be inaccurate, costly and time consuming

Question 7

What are the advantages of opportunity sampling?

Answer 7

. easy to carry out
. inexpensive

Question 8

What are the disadvantages of opportunity sampling?

Answer 8

. unlikely to provide a representative sample
. highly dependent on individual researcher.