How do you read a table or graph and choose the option that the data actually support on a Digital SAT question?
Command of evidence (quantitative): reading a table, bar graph or line graph, interpreting its labels and units, and selecting the choice that the data support or that correctly completes a claim, without misreading the trend.
A focused answer to the Digital SAT quantitative command-of-evidence skill: reading axes, labels and units on a table or graph, matching a claim to the actual numbers or trend, and avoiding choices that misstate the data or go beyond what the graphic shows.
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What this skill is asking
A quantitative command-of-evidence question pairs a short passage with a table, bar graph or line graph and asks which choice the data support, or which choice completes a claim using the graphic. On the Digital SAT, the College Board (Information and Ideas domain) phrases it as "Which choice is best supported by the data in the table?" or "Which choice most effectively uses data from the graph to complete the statement?" The skill is to read the graphic carefully, understand its labels and units, and pick the choice that matches the actual numbers or trend.
Read the graphic before the choices
The single most common error on these questions is jumping to the choices before understanding the graphic. The labels and units carry the meaning, and a unit you skipped (per cent versus count, thousands versus millions) can flip an answer.
For a table, read down the relevant column and compare the right rows. For a bar graph, compare bar heights. For a line graph, read the shape: where it rises, falls, peaks or levels off.
Match the claim to the data
The choices usually combine a data reading with a claim, and both parts must be correct. A choice can quote a true number but attach it to the wrong claim, or state a true comparison about the wrong items.
Do not go beyond the data
A second common error is choosing an answer that the graphic does not actually show. A table of rainfall does not tell you why it rained, and a graph of population over time does not tell you the cause of a decline. The SAT rewards choices that stay strictly within what the data display. If a choice requires information the graphic does not contain, it is wrong, even if it is plausible.
This skill is the numeric cousin of textual command of evidence: in both, you match a claim to the best supporting evidence, but here the evidence is a value or trend you read off a graphic. Careful axis-reading and a precise translation of the claim are what separate the right answer from the tempting near-misses.
Exam-style practice questions
Practice questions written in the style of College Board exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
Digital SAT R&W (style)1 marksA table shows annual rainfall: Site A 800 mm, Site B 1200 mm, Site C 400 mm, Site D 1000 mm. A text claims the wettest site received three times the rainfall of the driest. Which choice best completes the claim with data from the table? (A) Site B received 1200 mm, three times Site C's 400 mm. (B) Site A received 800 mm, twice Site C's 400 mm. (C) Site D received 1000 mm, the most of any site. (D) Site C received 400 mm, the most of any site.Show worked answer →
The correct answer is (A).
The wettest site is B at 1200 mm and the driest is C at 400 mm, and , so B received three times C's rainfall, exactly matching the claim. Choice (B) gives a true ratio but for the wrong sites and does not address wettest-versus-driest; (C) is true that D has 1000 mm but D is not the wettest, and it ignores the ratio; (D) misstates C as the most when it is the least. Read the actual numbers and match the specific claim.
Digital SAT R&W (style)1 marksA line graph shows a bacterial population rising from hour 0 to hour 6, then falling from hour 6 to hour 12. A text states the population peaked before declining. Which choice is best supported by the graph? (A) The population fell continuously from hour 0. (B) The population rose to a maximum at hour 6, then declined. (C) The population stayed constant throughout. (D) The population was highest at hour 12.Show worked answer →
The correct answer is (B).
The graph rises to hour 6 and falls afterward, so the maximum is at hour 6 followed by a decline, which matches "peaked before declining." Choice (A) contradicts the rising portion; (C) contradicts the changing line; (D) names the lowest end point as highest. The supported choice is the one that matches the actual shape of the graph, read off its axes.
Related dot points
- Command of evidence (textual): selecting the sentence, detail or finding that most directly supports, illustrates or strengthens a stated claim or hypothesis, and rejecting evidence that is merely related.
A focused answer to the Digital SAT textual command-of-evidence skill: rephrasing the claim, finding the choice that most directly supports or illustrates it, and eliminating evidence that is on-topic but does not actually back the specific claim.
- Central ideas and details: stating the main point of a short passage in your own words, and finding a specific detail that is explicitly stated or closely paraphrased, without adding outside information.
A focused answer to the Digital SAT Information and Ideas skill of identifying a passage's central idea and locating specific details: forming a short headline for the main point, matching details to the exact lines, and avoiding answers that add information or distort the text.
- Inferences: drawing the conclusion that follows logically from a short passage, choosing the option that most logically completes the text, and rejecting choices that overreach, contradict, or add unstated information.
A focused answer to the Digital SAT inference skill: identifying the logic of a short passage, choosing the option that most logically completes it or is most strongly supported, and avoiding inferences that overreach or rely on outside knowledge.
- Reading actively for information: a method for the short passages that finds the claim, the structure and the key detail on a first read, and uses predict-then-match and elimination across all Information and Ideas question types.
A focused answer to reading Digital SAT passages actively for the Information and Ideas domain: a first-read method that pins down the claim, the structure and the key detail, then applies predict-then-match and process of elimination across central ideas, evidence and inference questions.
Sources & how we know this
- Reading and Writing: Content Domains and Skills — College Board (2024)
- Digital SAT Sample Questions — College Board (2024)