Key Science Skills - EARLY START

In random sampling, what is the primary method used to ensure that every individual has an equal chance of being selected?

• The use of convenience sampling.
• The stratification of the population into subgroups.
• The application of random number generators or similar methods.
• The selection of participants based on specific traits.

Which method is often used to ensure unbiased selection in random sampling?

• Choosing participants from a specific demographic
• Using a fixed list of individuals
• Selecting participants based on convenience
• Drawing names from a hat

In a study on stress levels among university students, what is the significance of randomly selecting 200 students from the university's enrollment list?

• It guarantees that the sample will represent only first-year students.
• It allows the researcher to focus only on students with high stress levels.
• It ensures that every student has an equal chance of being selected.
• It eliminates the need for ethical considerations in research.

Which of the following statements about random sampling is accurate?

• It minimizes selection bias when executed correctly.
• It requires participants to be selected based on specific traits.
• It guarantees that the sample will be large enough.
• It is the only method that can ensure a representative sample.

What is the primary goal of stratified sampling?

• To ensure that all demographic groups are included in the sample.
• To select participants randomly from the entire population.
• To minimize the time spent on participant recruitment.
• To simplify the sampling process for researchers.

How does stratified sampling differ from random sampling?

• Stratified sampling selects participants randomly from the entire population.
• Stratified sampling does not require any specific characteristics.
• Stratified sampling divides the population into subgroups before selection.
• Stratified sampling is less representative than random sampling.

What is the key characteristic of stratified sampling?

• It does not require any specific characteristics for selection.
• It randomly selects participants from the entire population.
• It ensures that key subgroups are proportionally represented.
• It is the easiest method to implement in research.

What is a key requirement for stratified sampling to be effective in psychological research?

• It ensures that every individual has an equal chance of selection.
• It can be conducted without prior knowledge of the population.
• It relies on the accurate identification of relevant strata.
• It requires minimal effort compared to random sampling.

Which sampling method involves selecting participants based on their availability?

• Stratified sampling
• Random sampling
• Convenience sampling
• Systematic sampling

Which of the following best illustrates convenience sampling in psychological research?

• Recruiting participants from a psychology class
• Randomly selecting participants from a national database
• Using a computer algorithm to choose participants
• Surveying every third person in a public park