SAT Reading & Writing · Command of Evidence (quantitative)
A school compared the percentage of students submitting an assignment on time before and after adding a reminder message.
A school compared the percentage of students submitting an assignment on time before and after adding a reminder message.
| Condition | On-time submissions |
|---|---|
| No reminder | 72% |
| Reminder | 81% |
Which choice most effectively uses the data to support the claim that on-time submission was higher with the reminder?
| Condition | On-time submissions |
|---|---|
| No reminder | 72% |
| Reminder | 81% |
Which choice most effectively uses the data to support the claim that on-time submission was higher with the reminder?
Answer and explanation
Answer: A: The reminder condition had an on-time rate 9 percentage points higher than the no-reminder condition.
The claim requires a direct comparison between the two conditions, and A supplies that exact comparison: a 9-percentage-point gap favoring the reminder condition. B is true of both conditions but doesn't establish that one outperformed the other. C reports only the no-reminder condition in isolation, which cannot show a difference between groups. D describes timing of the reminder, not its effect on submission rates.
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