ACT® · Reading — Integration of Knowledge and Ideas: Visual and Quantitative Information
Reading a Table Alongside a Passage
A table next to a passage carries exact numbers the writer chose not to spell out in words. You answer by locating the right row and column first, then reading only the cells the question names.
A passage makes a claim in words, then hands you a table to check it against. The table exists because numbers are more precise than prose, and the writer wants you to do the work of connecting the two. That means the table almost always holds information the sentences never state outright: exact values, extra years, extra categories. Your job is not to summarize the table. It's to find the one fact that bears on the claim.
Before you touch a number, read the headers. The row labels tell you which item each line describes; the column labels tell you which measurement or year each number belongs to. Only once you know both does a number mean anything. A table with a big, eye-catching value in one cell is not automatically the answer. Questions usually ask about a specific row and column, a change between two columns, or a comparison across rows, and the largest number in the table is often irrelevant to all three.
Watch for footnotes attached to a column header. A footnote can quietly change what that column measures, which breaks any clean comparison between it and another column. This is the same skill the passage itself demands elsewhere: read what's actually written, not what you assume. Tables just move that demand from sentences to grids, and the next skill in this unit applies the identical habit to graphs and figures, where a shifted axis or rescaled unit plays the same trick as a footnote.
Key terms
- Row header
- The label at the left of a row, naming which item, place, or category that row describes.
- Column header
- The label at the top of a column, naming which year, unit, or measurement that column holds.
- Footnote
- A note attached to a header that redefines or restricts what that column or row actually measures.
- Cell
- A single value in a table, meaningful only once you know its row and column together.
Watch it explained
- How it worksHow do you read a table's row and column headers before looking at a single number?
- Common mistakeWhy isn't the biggest number in a table usually what a question is about?
- Worked exampleShow me pulling one country's 1990 and 2020 forest cover out of a four-column table.
- Going furtherWhat changes when a footnote redefines one of a table's columns?
Check yourself
End of topic.