Non-random sampling

Question 1

What are the two types of non-random sampling?

Answer 1

quota sampling

opportunity sampling

Question 2

opportunity sampling

Answer 2

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

Question 3

advantages of opportunity sampling x2

Answer 3

easy and quick to carry out

inexpensive

Question 4

disadvantages of opportunity sampling x2

Answer 4

unlikely to be representative of the population

highly dependent on the individual researcher

Question 5

quota sampling

Answer 5

The population is divided into groups in terms of gender, social class etc. The number of people in each group is set to try and reflect the group’s proportion in the whole population.The interviewer selects the actual sampling units

Question 6

advantages of quota sampling x5

Answer 6

a representative sample can be done quickly for a small sample size
no sampling frame is required
costs are kept at a minimum
easy to administer
allows easy comparisons between different groups within a population

Question 7

disadvantages of quota sampling x3

Answer 7

non-random sampling can introduce bias
population must be divided into groups, which can be costly and inaccurate due to the interviewer having to judge the respondents characteristics
non-responses are not recorded