Scientific Method Advanced Quiz 2
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Advanced Quiz 2
1. What is the purpose of a placebo in experimental design?
To serve as a control and account for psychological effects
To change the independent variable
To increase the sample size
2. Which of these is an example of bias in scientific research?
Selecting data that supports a hypothesis and ignoring data that does not
Using a large sample size
Randomizing the experiment
3. What is the null hypothesis?
A statement that there is no effect or no difference
A statement that predicts an effect
A proven fact
4. Which of these is a limitation of the scientific method?
It cannot answer questions about values, ethics, or the supernatural
It can prove anything
It is always objective
5. What is meant by “sample size” and why is it important?
The number of subjects in a study; larger sizes increase reliability
The number of variables measured
The number of experiments conducted
6. What is a meta-analysis?
A study that combines data from multiple studies to draw broader conclusions
A single experiment
A type of bias
7. Which of the following is an example of a pseudoscientific claim?
A claim that cannot be tested or falsified
A claim supported by peer-reviewed evidence
A claim based on statistical analysis
8. What is publication bias?
The tendency to publish only positive or significant results
The process of peer review
The use of randomization in experiments
9. Why is random assignment important in experimental design?
It helps eliminate selection bias and ensures groups are comparable
It decreases sample size
It makes the experiment subjective
10. What is a longitudinal study?
A study that follows the same subjects over a long period
A study done in a single day
A study with a small sample size
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