Level 7: Complex Documents, Inferences, and Best-Fit Conclusions
What this level asks
Level 7 uses the most complex graphics: multi-variable tables, combined charts with secondary axes, process diagrams, and documents where the needed information is spread across several elements. Questions may ask you to draw a conclusion, identify which statement is supported, or decide which of several options best fits the data.
Concepts to know
- Supported vs. plausible: A conclusion must follow from the graphic, not merely sound reasonable.
- Secondary axes: A chart with two vertical axes assigns different series to each; confirm which axis a line uses before reading it.
- Correlation vs. cause: Two values moving together does not prove one causes the other.
- Sufficiency: Some questions ask what additional information would be needed; recognize when the graphic cannot answer.
- Process diagrams: Follow the full path, including loops and rework branches.
Traps to watch for
- Overreach: Answers that claim cause, prediction, or certainty beyond the data are usually wrong.
- Axis swapping: Reading a secondary-axis series against the primary axis produces plausible but false numbers.
- Ignoring a loop: In process diagrams, a return arrow means steps repeat; totals may be larger than a single pass suggests.
- Absolute words: "Always," "never," and "proves" rarely match limited data.
Rule of thumb
Test each option against the graphic and reject any that requires an assumption the document does not support. Prefer the modest, directly supported statement.
Worked example: A chart shows training hours and error rates both falling over six months. The supported conclusion is that the two moved together; claiming training caused the drop overreaches, so that option is rejected.