Sampling Methods

Which of the following is the best definition of a simple random sample?

• A sample created using random numbers

• A sample where the simplest method of sampling is used

• A sample which is representative of the population

• A sample where each member of the population has an equal chance of being selected

Selecting every 10^th item in the population is an example of a ...

• Systematic sample

• Cluster sample

• Stratified sample

• Random sample

You want to ask 100 students their opinions on school dinners so question the first 100 students to enter the dinner hall at lunch time. This is an example of...

• Random sampling

• Cluster sampling

• Opportunity sampling

• Self-selected sampling

Randomly selecting 10 students from each year group in a school is an example of...

• Simple random sampling

• Stratified sampling

• Systematic sampling

• Quota sampling

Asking the first 10 students that you see from each year group in a school is an example of...

• Simple random sampling

• Opportunity sampling

• Systematic sampling

• Quota sampling

Randomly selecting 3 classes from a school and then investigating these classes further is an example of...

• Simple random sampling

• Cluster sampling

• Systematic sampling

• Stratified sampling

Select all descriptions that apply to systematic sampling

• Random

• Causes data to be clustered together

• Requires a sampling frame

• Can be biased

Select all descriptions that apply to stratified sampling

• Random

• Produces a sample representative across selected factors

• Requires a sampling frame

• Can be biased

Select all descriptions that apply to cluster sampling

• Random

• Guaranteed to produce a representative sample

• Requires a sampling frame

• Can be biased

Select all descriptions that apply to quota sampling

• Random

• Produces a sample representative across selected factors

• Requires a sampling frame

• Can be biased