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 clinic compared average appointment wait times before and after adding a second receptionist:
| Before addition (avg.) | 27 minutes |
|---|---|
| After addition (avg.) | 14 minutes |
| Average patient-reported friendliness rating before | 4.0/5 |
|---|---|
| Average patient-reported friendliness rating after | 4.1/5 |
A clinic manager states that adding the receptionist substantially cut wait times and substantially raised friendliness ratings.
Do the figures support the manager's statement?
C — No, since although wait time fell substantially, the friendliness rating rose only slightly.. Wait time dropped substantially (27 to 14 minutes), but the friendliness rating rose only slightly (4.0 to 4.1)—so while wait time improved substantially, friendliness did not improve to the same degree, contradicting the claim that both improved substantially.
A researcher recorded the number of neighborhood cleanup events held and the tons of litter collected in a district over four quarters:
| Q1 | 1 event, 0.8 tons |
|---|---|
| Q2 | 4 events, 3.1 tons |
| Q3 | 3 events, 2.6 tons |
| Q4 | 6 events, 4.9 tons |
Which choice best describes the relationship shown in the table?
D — As the number of cleanup events increased, the amount of litter collected generally also increased.. Both event counts and litter collected generally rise together across the four quarters (1→4→3→6 roughly tracking 0.8→3.1→2.6→4.9), a clear positive relationship matching choice D.
A dog-training school tabulated the number of clients and average class-completion scores for four instructors:
| Instructor A | 40 clients, 82% score |
|---|---|
| Instructor B | 25 clients, 91% score |
| Instructor C | 60 clients, 74% score |
| Instructor D | 33 clients, 88% score |
Which statement best matches the pattern shown in the figures?
B — Instructors with fewer clients generally recorded higher completion scores.. As client count decreases (60→40→33→25), completion score generally rises (74%→82%→88%→91%), showing an inverse relationship between client load and score—matching choice B's description.
A researcher measured the number of newly certified translators and the number of translated documents processed by an agency over four quarters:
| Q1 | 2 translators, 140 documents |
|---|---|
| Q2 | 5 translators, 310 documents |
| Q3 | 4 translators, 350 documents |
| Q4 | 8 translators, 520 documents |
Which statement best matches the pattern shown in the figures?
C — As the number of certified translators rose, the number of documents processed generally also rose.. Both translator counts and documents processed generally rise together across the four quarters (2→5→4→8 roughly tracking 140→310→350→520), a clear positive relationship matching choice C.
A researcher studying delivery times collected data on average delivery time by shipping method for a mid-sized retailer:
| Standard | 5.2 days |
|---|---|
| Expedited | 2.8 days |
| Overnight | 1.1 days |
| Economy | 8.4 days |
The researcher claims that, on average, overnight shipping is faster than any other method listed.
Does the table support the researcher's claim?
A — Yes, because overnight has the lowest average delivery time of the four methods listed.. Overnight's average (1.1 days) is lower than standard (5.2), expedited (2.8), and economy (8.4), so it is indeed the fastest method listed, supporting the claim. Choice B misreads the numbers—expedited (2.8) is slower than overnight (1.1), not faster.
A survey asked residents of four towns how many minutes, on average, they spend outdoors per week, and cross-referenced this with the number of public benches within a half mile of the town center:
| Town A | 3 benches, 95 min/week |
|---|---|
| Town B | 9 benches, 140 min/week |
| Town C | 16 benches, 205 min/week |
| Town D | 22 benches, 260 min/week |
Which choice best describes the relationship shown in the data?
C — As the number of public benches increases, average weekly outdoor time also increases.. Outdoor time rises steadily (95→140→205→260) as bench count rises (3→9→16→22), a clear positive relationship, matching choice C exactly.
A study tracked the percentage of survey respondents who reported feeling confident managing their personal finances, broken down by whether they had taken a financial literacy course:
| No course, under 25 | 22% |
|---|---|
| No course, 25–44 | 31% |
| Course, under 25 | 58% |
| Course, 25–44 | 61% |
Which choice best describes the relationship shown in the table?
A — Respondents who had taken a financial literacy course reported substantially higher confidence than those who had not, regardless of age group.. Within each age group, course-takers report much higher confidence (58% vs. 22% for under 25; 61% vs. 31% for 25–44), showing the course effect holds across both age groups, matching choice A.
A researcher studying processing speed collected data on average transaction processing time by payment method:
| Check | 3.2 days |
|---|---|
| Wire transfer | 1.1 days |
| Credit card | 0.1 days |
| ACH transfer | 2.0 days |
The researcher claims that, on average, credit card payments process faster than any other method listed.
Does the table support the researcher's claim?
D — Yes, because credit card has the lowest average processing time of the four methods listed.. Credit card's average (0.1 days) is lower than check (3.2), wire transfer (1.1), and ACH transfer (2.0), so it is indeed the fastest method listed, supporting the claim. Choice B misreads the numbers—wire transfer (1.1) is slower than credit card (0.1), not faster.
A city compared monthly reports of downed tree limbs before and after a proactive tree-trimming initiative:
| 3 months before initiative | 71, 68, 75 reports |
|---|---|
| 3 months after initiative | 24, 20, 28 reports |
A public works official states that the initiative roughly tripled the reduction, cutting reports to about a third of the earlier level.
Do the figures support the official's statement?
C — Yes, since the post-initiative average (about 24) is roughly a third of the pre-initiative average (about 71).. The pre-initiative average (71+68+75)/3 ≈ 71 and post-initiative average (24+20+28)/3 ≈ 24, and 24 is roughly a third of 71—supporting the official's statement as a reasonable approximation.
A town compared monthly reports of stray-animal sightings before and after launching a subsidized spay-and-neuter program:
| 3 months before program | 63, 59, 68 reports |
|---|---|
| 3 months after program | 22, 19, 25 reports |
An animal-control official states that the program cut the monthly sighting rate to roughly a third of its earlier level.
Do the figures support the official's statement?
C — Yes, since the post-program average (about 22) is roughly a third of the pre-program average (about 63).. The pre-program average (63+59+68)/3 ≈ 63 and post-program average (22+19+25)/3 ≈ 22, and 22 is roughly one third of 63—supporting the official's statement as a reasonable approximation.
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.