SAT Reading & Writing · Command of Evidence (quantitative)
A researcher argues that performance became faster over time even though accuracy declined slightly. Which choice most effectively…
A study tracked two measures after participants learned a new procedure.
| Test time | Accuracy | Average completion time |
|---|---|---|
| Immediately | 92% | 48 s |
| One month later | 87% | 39 s |
A researcher argues that performance became faster over time even though accuracy declined slightly. Which choice most effectively supports the argument?
| Test time | Accuracy | Average completion time |
|---|---|---|
| Immediately | 92% | 48 s |
| One month later | 87% | 39 s |
A researcher argues that performance became faster over time even though accuracy declined slightly. Which choice most effectively supports the argument?
Answer and explanation
Answer: A: Completion time improved by 9 seconds while accuracy fell by 5 percentage points.
The researcher's argument has two parts, faster completion and slightly lower accuracy, and A is the only choice that reports both changes together, matching the full claim. B and D each report a single value in isolation without connecting it to a change over time. C reports one data point that doesn't by itself demonstrate either half of the argument.
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