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Tables, Charts, and Graphs (Data Interpretation)
NOTE: Data Interpretation questions are rare on the GMAT. Read this section last.
Graphs and charts show the relationship of numbers and quantities in visual
form. By looking at a graph, you can see at a glance the relationship
between two or more sets of information. If such information were
presented in written form, it would be difficult to read or understand.
Here are some things to remember when doing problems based on data interpretation:
- Take your time and read carefully. Understand what you are being asked to do before you begin figuring.
- Check the dates and types of information required. Be sure that you are looking in the proper columns, and on the proper lines, for the information you need.
- Check the units required. Be sure that your answer is in thousands, millions or whatever the question calls for.
- In computing averages, be sure that you add the figures you need and no others, and that you divide by the correct number of years or other units.
- Be careful in computing problems asking for percentages.
- Remember that to convert a decimal into a percent you must multiply it by 100. For example, 0.04 is 4%.
- Be sure that you can distinguish between such quantities as 1% (1 percent) and .01% (one one-hundredth of 1 percent), whether in numerals or in words.
- Remember that if quantity X is greater than quantity Y, and the question asks what percent quantity X is of quantity Y, then the answer must be greater than 100 percent.
Example Set: Table Chart
Examples 1-5 are based on this Table Chart. (Easy) This is a partial free sample of our prep guide. For more information, purchase the
This is a partial free sample of our prep guide. To view the remainder of this page, purchase the 800score Prep Course.
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