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Part 1 of 1
Scientific reasoning questions ask whether evidence supports a conclusion. Always identify what was measured, how participants were selected, and whether alternative explanations exist.
A large result does not automatically mean a strong conclusion.
Worked example
A study of 20 students finds that coffee improves attention. A stronger study would include a larger random sample and a control group receiving a placebo.
1.A control group helps compare experimental outcomes.
2.A small sample always proves a conclusion.
3.Alternative explanations should be considered in scientific reasoning.
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