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3. Strategy for Elite Items
GED® Science: Full-Length Practice Exam (Level 5 - Elite) · 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 study finds ice-cream sales and drownings both rise in summer. What third factor most likely explains both?
Hot weather drives both swimming (drownings) and ice-cream sales -- a confounding variable.
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