1. Explain what extraneous variables are. (80 words)
2. Why independent and dependent variables important? (80 words)
3. How independent variable can be changed to alter the dependent variable. (80 words)
4. Example of extraneous variable. (80 words)
5. Why levels of evidence are important? (80 words)
6. Why reliable evidence is important? (80 words)
7. Explain why systematic reviews, meta-analysis and critically-appraise topics/articles have the highest level of evidence possible. (80 words)
Please answer each question separately and in your own words. Thank you.
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