SAT Reading & Writing: Identifying the Main Idea of a Chart
24+ practice questions in Praczo
The concept, explained
- 1
When asked to identify the best summary or main idea of a graphic, look at the big picture trend, NOT an isolated data point.
- 2
Check the title, the x-axis, and the y-axis to see exactly what relationship is being plotted.
- 3
Does the line go up steadily? Is there a sudden drop? Are the bars relatively equal?
- 4
The correct answer will synthesize the overall pattern shown rather than cherry-picking one year or one category.
- ✗ Choosing a choice that states a true fact from the chart (e.g., "Sales peaked in May") that ignores the overall downward trend over the whole year.
- ✗ Choosing an answer that sounds logical but introduces reasoning not present in the graph.
SAT-style practice
A graph titled "Annual Rainfall 1980-2020" shows rainfall fluctuating wildly year-to-year, but the overall trend line is distinctly sloping downwards. What is the main idea?
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