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3. Strategy for Mastery Items
GED® Science: Full-Length Practice Exam (Level 6 - Mastery) · preview lesson
- Set up every calculation fully. Formula, values, units, answer -- in that order.
- Watch nonlinear relationships. Energy with the square of speed; intensity with the inverse square of distance.
- Combine probabilities. Multiply independent probabilities; use ratios for offspring outcomes.
- Attack the conclusion. Look for confounding variables, missing controls, and overreach beyond the data.
- Estimate as a safeguard. A rough check catches a wrong power of ten or a flipped ratio.
Quick Check
A drug study reports improvement but used no comparison group. What is its biggest weakness?
Without a control group, you cannot tell whether the drug caused the improvement.
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