Sampling Methods Quiz

What is a random sample?

• Selecting every nth person from a list.

• Equal chance of selection, like a lottery.

• Sample reflects the proportion of people in different population strata.

• Choosing whoever is available.

What is a systematic sample?

• Equal chance of selection, like a lottery.

• Participants 'self-select' e.g. advert.

• Selecting every nth person from a list.

• Choosing whoever is available.

What does a stratified sample reflect?

• Equal chance of selection, like a lottery.

• The proportion of people in different population strata.

• Participants 'self-select' e.g. advert.

• Choosing whoever is available.

What is an opportunity sample?

• Choosing whoever is available.

• Selecting every nth person from a list.

• Sample reflects the proportion of people in different population strata.

• Participants 'self-select' e.g. advert.

What is a volunteer sample?

• Equal chance of selection, like a lottery.

• Participants 'self-select' e.g. advert.

• Selecting every nth person from a list.

• Choosing whoever is available.

What is a potential disadvantage of a random sample?

• Cannot account for all subgroups.

• Time-consuming, may not work.

• Unrepresentative.

• Participants 'self-select'.

What is a characteristic of a systematic sample?

• Potentially unbiased, control CVs/EVs.

• Objective method, but time-consuming.

• Representative, cannot account for all subgroups.

• Convenient, unrepresentative.

What is a limitation of a stratified sample?

• Time-consuming, may not work.

• Cannot account for all subgroups.

• Participants 'self-select'.

• Convenient, unrepresentative.

What is a disadvantage of an opportunity sample?

• Time-consuming, may not work.

• Objective method, but time-consuming.

• Unrepresentative.

• Participants 'self-select'.

What is a characteristic of a volunteer sample?

• Easy and participants engaged.

• Objective method, but time-consuming.

• Representative, cannot account for all subgroups.

• Convenient, unrepresentative.