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Question 1

Interviewing all members of a given population is called:

a) a sample.

b) a Gallup poll.

c) a census.

d) a Nielsen audit.

Question 2

In the UK, which ONE of these sampling frames became popular for UK domestic populations after 1990?

a) The Electoral Register

b) Yellow Pages directories

c) Postcode address file (PAF)

d) Kompass directories

Question 3

Sampling means following a sequence of stages. Which ONE of the following stages should come before the others?

a) Proceed with the fieldwork

b) Find suitable source for the population members

c) Define the people of interest

d) Examine the objective of the study

Question 4

Which ONE of these sampling methods is a probability method?

a) Quota

b) Judgement

c) Convenience

d) Simple random

Question 5

For sampling, which ONE of the following should be up-to-date, complete and affordable?

a) A census

b) A CAPI machine

c) A sampling frame

d) A respondent

Question 6

Which ONE of these sample sources will be the most incomplete for a sample of nationally representative households?

a) The Electoral Register

b) The postcode address file (PAF)

c) Telephone directories

d) A customer database

Question 7

Which ONE of the following is the benefit of using simple random sampling?

a) We can calculate the accuracy of the results

b) The results are always representative

c) Interviewers can choose respondents freely

d) Informants can refuse to participate

Question 8

Which ONE of the following is the main problem with using non-probability sampling techniques?

a) The expense

b) The results are never representative

c) Human judgement error

d) Informants can refuse to participate

Question 9

Which ONE of the following is the best - but an often unused - way to decide on sample size?

a) By using industry standards

b) By calculation

c) By building blocks

d) By budget available

Question 10

Which ONE of the following methods is generally used in qualitative sampling?

a) Random digit dialling

b) Quota

c) Stratified random