Investigation and Hypothesis Quiz

What does a hypothesis test in an investigation?

• is written as a statement that includes the variables being studied.

• The researcher's question

• is a statement predicting the probable outcomes of an investigation.

• The variables being studied

What is the dependent variable in the study about sugar consumption and attention?

• Consuming sugar

• Group size

• Level of attention

• Time of day

What is a confounding variable?

• A variable that is always controlled

• An unwanted variable affecting the DV

• A variable that is the same as the IV

• A variable that has no effect

What is the purpose of measuring attention in both groups?

• To determine group size

• To assess the effect of sugar

• To change the independent variable

• To confuse the participants

What is random sampling?

• Selecting participants based on convenience

• Selecting participants who volunteer

• Selecting participants so each member of the population has an equal chance of being chosen

• Selecting participants based on specific characteristics

What is a limitation of small random samples?

• They are more expensive

• They may not be representative of the population

• They are easier to manage

• They improve external validity

What is the benefit of improving external validity in a study?

• It reduces the cost of the study.

• It ensures the results are applicable to the general population.

• It speeds up the research process.

• It limits the study to a specific group.

What is a limitation of a between subjects design?

• It requires fewer participants.

• It has more control over extraneous variables.

• It requires more participants than a within subjects design.

• It is less time-efficient.

What is a characteristic of literature reviews?

• They provide new research findings.

• They are comprehensive and critical reviews.

• They focus only on primary data.

• They ignore existing theories.

What is a limitation of fieldwork related to researcher bias?

• It is always objective.

• It is open to interpretation and bias by the researcher.

• It guarantees accurate data.

• It eliminates the need for participant consent.