Quantitative evidence: reading the graph the question did not ask about
Charts on the SAT usually show more than one thing. Only one of them is relevant to the sentence you are completing.
Why it happens
Reading a graph correctly feels like the whole task, so once a choice checks out against the axes it gets accepted. But the question is about a claim in the text, and the chart's other true trends are exactly what the wrong choices report.
See the trap
The text claims yields rose faster under treatment B. The chart plots yield for treatments A and B across four years.
✗ The trap: "Yields under treatment A rose from 2.1 to 2.4 tonnes." — correctly read, and about the wrong series.
✓ The fix: A choice comparing B's increase to A's, because the claim is comparative.
How to actually fix it
- Read the claim first and note whether it is comparative, directional, or absolute.
- Find the exact series and interval the claim refers to.
- Reject choices that quote real numbers from a different series, year, or axis.
Made this mistake on a real question?
Practice Information and Ideas questions here. Miss one and it is logged with the exact error, then brought back until you beat it.
Practice Information and Ideas →FAQ
Do I need to compute anything?
Rarely more than a subtraction or a rough comparison. If a choice seems to need real arithmetic, re-read the claim — you are probably answering a harder question than the one asked.
How do I stop repeating this mistake?
Reading the explanation isn't enough — your brain needs to beat the trap on a fresh question. Practice the skill in the kaoshen.co question bank: miss one and it is logged with the exact error, then brought back to you three days later and again after fourteen.