Research Design and Variables Quiz

In which sampling technique are participants selected based on their availability and willingness to take part?

• Opportunity Sampling

• Stratified Sampling

• Random Sampling

• Snowball Sampling

What is the main characteristic of random sampling?

• Participants are selected based on referrals.

• Every individual has an equal chance of being selected.

• Participants volunteer themselves.

• Selection is based on convenience.

What is a potential drawback of using opportunity sampling?

• It is time-consuming.

• It may not be representative of the population.

• It requires complex statistical analysis.

• It is difficult to implement.

What is the IV in the following: A researcher wants to study the effects of sleep on memory recall.

• Sleep

• Recall

What is the DV in the following: A researcher wants to study the effects of sleep on memory recall.

• Sleep

• Recall

Identify the research design: A researcher wants to study the effects of sleep on memory recall. One group of participants is allowed to sleep for 8 hours before completing a memory test, while a second group of participants is deprived of sleep for 24 hours before taking the same test.

• Independent Samples Design

• Repeated Measures Design

What is the main advantage of stratified sampling?

• It ensures each subgroup is adequately represented.

• It is the easiest method to implement.

• It eliminates all forms of bias.

• It requires the least amount of resources.

Which sampling technique involves selecting individuals entirely by chance?

• Stratified sampling

• Random sampling

• Opportunity sampling

• Snowball sampling

What is a potential drawback of opportunity sampling?

• It may not provide a representative sample.

• It is too time-consuming.

• It requires complex statistical analysis.

• It eliminates participant bias.

In which sampling technique do existing study subjects recruit future subjects?

• Stratified sampling

• Random sampling

• Self-selected sampling

• Snowball sampling