10 original Command of Evidence: Quantitative questions, easiest first. Read a table or graph and pick the choice the data actually supports. Answer them all, then submit once to see every answer explained.
A software company tracked user login failures before and after introducing a simplified password reset process:
| Week 1 (before change) | 420 failures |
|---|---|
| Week 2 (before change) | 405 failures |
| Week 3 (after change) | 190 failures |
| Week 4 (after change) | 175 failures |
A product manager claims the new reset process caused a decrease in login failures.
Does the data support the manager's claim?
D — Yes, because failures were notably lower in the two weeks after the change than in the two weeks before it.. Failures fell from roughly 405–420 to roughly 175–190 after the change, a clear and notable decrease consistent with the claim. The data covers four weeks, so choice C is factually wrong, and choice B misreads the direction of change.
A survey asked residents of four neighborhoods how many minutes, on average, they spend on outdoor exercise per week, and cross-referenced this with the distance from each neighborhood to the nearest public park:
| Neighborhood A | 0.3 miles to park, 210 min/week |
|---|---|
| Neighborhood B | 0.8 miles to park, 165 min/week |
| Neighborhood C | 1.5 miles to park, 110 min/week |
| Neighborhood D | 2.9 miles to park, 60 min/week |
Which choice best describes the relationship shown in the data?
D — As distance to the nearest park increases, average weekly exercise time decreases.. Exercise minutes fall steadily (210→165→110→60) as distance rises (0.3→0.8→1.5→2.9 miles), a clear inverse relationship, matching choice D exactly.
A researcher paired hours spent in mentorship programs with subsequent pass rates on a professional licensing exam:
| Under 10 hrs | 33% pass rate |
|---|---|
| 10–20 hrs | 57% pass rate |
| 20–35 hrs | 76% pass rate |
| Over 35 hrs | 84% pass rate |
Which statement best matches the pattern shown in the figures?
B — Pass rate generally climbs as mentorship hours climb.. The pass rate climbs steadily (33%→57%→76%→84%) as mentorship hours increase, a clear positive pattern matching choice B.
A researcher paired the number of after-work art classes offered and enrollment counts across four community centers:
| Center A | 2 classes, 18 enrolled |
|---|---|
| Center B | 6 classes, 50 enrolled |
| Center C | 4 classes, 55 enrolled |
| Center D | 9 classes, 81 enrolled |
A program director states that centers offering more classes always had higher enrollment than centers offering fewer classes.
Do the figures support the program director's statement?
C — No, since Center C offered fewer classes than Center B yet had higher enrollment, breaking a strict always-increasing pattern.. Center C offered only 4 classes (fewer than Center B's 6) yet had higher enrollment (55 vs. 50), directly contradicting the claim that more classes 'always' means higher enrollment, even though choice B correctly describes Center D alone.
A study tracked the number of new insect species catalogued in a rainforest region across five-year survey periods, alongside the number of trained field researchers active during each period:
| 2000–2004 | 9 researchers, 14 species |
|---|---|
| 2005–2009 | 15 researchers, 22 species |
| 2010–2014 | 22 researchers, 35 species |
| 2015–2019 | 29 researchers, 44 species |
Which choice best describes the relationship shown in the table?
A — As the number of active field researchers increased, the number of newly catalogued species also increased.. Both researcher counts and catalogued species rise together across all four periods (9→15→22→29 and 14→22→35→44), a clear positive relationship matching choice A.
A researcher tracked the number of exhibitors and average visitor spending across five weekend craft fairs:
| Fair A | 12 exhibitors, $28 avg. spending |
|---|---|
| Fair B | 24 exhibitors, $41 avg. spending |
| Fair C | 35 exhibitors, $37 avg. spending |
| Fair D | 48 exhibitors, $55 avg. spending |
| Fair E | 18 exhibitors, $22 avg. spending |
Which statement best matches the pattern shown in the figures?
A — Fairs with more exhibitors did not always have higher average visitor spending than fairs with fewer exhibitors.. Fair C had more exhibitors (35) than Fair B (24) but lower average spending ($37 vs. $41), showing the relationship isn't perfectly consistent—matching choice A, not the absolute claim in choice C.
A researcher paired the number of active trail stewards with the miles of trail cleared of invasive plants across four seasons:
| Season 1 | 6 stewards, 3.2 miles |
|---|---|
| Season 2 | 11 stewards, 6.0 miles |
| Season 3 | 9 stewards, 7.4 miles |
| Season 4 | 15 stewards, 9.1 miles |
A park official states that seasons with more stewards always cleared more miles than seasons with fewer stewards.
Do the figures support the park official's statement?
C — No, since Season 3 had fewer stewards than Season 2 yet cleared more miles, breaking a strict always-increasing pattern.. Season 3 had only 9 stewards (fewer than Season 2's 11) yet cleared more miles (7.4 vs. 6.0), directly contradicting the claim that more stewards 'always' means more miles cleared, even though choice D correctly describes Season 4 alone.
A researcher studying delivery accuracy collected data on average package delivery error rate by carrier:
| Carrier A | 6.8% |
|---|---|
| Carrier B | 3.1% |
| Carrier C | 0.9% |
| Carrier D | 5.4% |
The researcher claims that, on average, Carrier C has a lower error rate than any other carrier listed.
Does the table support the researcher's claim?
B — Yes, because Carrier C has the lowest average error rate of the four carriers listed.. Carrier C's average (0.9%) is lower than Carrier A (6.8%), Carrier B (3.1%), and Carrier D (5.4%), so it is indeed the most accurate carrier listed, supporting the claim. Choice D misreads the numbers—Carrier B (3.1%) has a higher error rate than Carrier C (0.9%), not lower.
A researcher logged average alertness-survey scores for delivery drivers who took differing numbers of short breaks during an eight-hour shift:
| 0 breaks | 54 |
|---|---|
| 1 break | 63 |
| 2 breaks | 74 |
| 3 breaks | 66 |
A logistics consultant states that alertness scores climb without interruption as break count climbs.
Do the figures support the consultant's statement?
C — No, since scores climb through two breaks, then fall for drivers taking three breaks.. Scores climb 54→63→74, then fall to 66 at three breaks—breaking the claim of an uninterrupted rise; choice B is technically true in isolation but doesn't address 'without interruption.'
An online course platform recorded what fraction of enrollees finished a course, sorted by how many discussion posts they made in week one:
| 0 posts | 9% finished |
|---|---|
| 1–2 posts | 27% finished |
| 3–5 posts | 48% finished |
| 6+ posts | 70% finished |
Which statement best matches the pattern shown in the figures?
A — Completion rates climb as week-one discussion activity climbs.. The completion percentages rise steadily (9%→27%→48%→70%) as posting activity increases, a clear positive pattern matching choice A.
Score:
Every question above is now marked up: the correct answer is highlighted, any wrong option you picked is flagged, and each explanation is open.
No. Every question here is original, written to the College Board's published Digital SAT Reading & Writing specification for the Command of Evidence: Quantitative skill. No retired or copyrighted College Board material appears anywhere on this site.
Command of Evidence (Quantitative) pairs a short passage with a table or graph and asks which choice most effectively uses that data to complete or support a stated claim. No arithmetic beyond comparison is required — it is a reading question about a data display, not a maths question.
Read the title, the axis labels, the units and the column headers before you read a single answer choice; most wrong answers survive only because the reader assumed what the numbers measured. Then find the specific comparison the claim needs, locate exactly those cells or points, and check each choice against them.
No, and deliberately so. This drill is 10 Command of Evidence: Quantitative questions back to back; a real Reading & Writing module is 27 questions in 32 minutes drawn from all eleven skills. Use a drill to fix one weakness, then take a full module to practice the real thing.
No. The SAT has no penalty for a wrong answer — a blank and a wrong guess both score zero — so answer every question, including the ones you have to guess.