Data organized in rows and columns.

A table presents information in labeled rows and columns. Data interpretation questions use tables to compare values, calculate totals, and identify changes or relationships across categories.

How to read a data table

• Read the title, row labels, column headings, and any notes before using the figures.
• Check the units carefully: values may be in thousands, percentages, or another stated measure.
• Locate the relevant row and column, then copy only the figures needed for the question.

Common calculations and comparisons

• Total: add the required values, making sure the categories do not overlap.
• Difference: subtract the smaller value from the larger value.
• Percentage of a total: part / total x 100.
• Percentage change: (new value - old value) / old value x 100.
• Ratio: compare the values in the order asked, then simplify by dividing by their highest common factor.
• Average: sum the relevant values and divide by their count.

A reliable solving method

1. Identify exactly what the question asks you to find.
2. Mark the relevant rows, columns, and units.
3. Choose the correct operation or formula and substitute the data.
4. Calculate carefully and check whether the result is reasonable.
5. Include the correct unit and distinguish totals from averages.