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AQA Science: Glossary - Accuracy
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An accurate measurement is one which is close to the true value.
e.g. Bob, Bill and Becky are asked to determine the capacity of a box for storing ball bearings. Each of them uses a different ruler and only one takes care doing it. Here are their results:
| Name | Width (cm) | Height (cm) | Depth (cm) | Capacity (cm³) |
| Bob | 10 | 9 | 7 | 630 |
| Bill | 11 | 8 | 6.5 | 572 |
| Becky | 10.8 | 7.9 | 6.4 | 546 |
The true value of the capacity is known to be 545 cm³, so Becky's measurements are the most accurate. Her calculated capacity is the most accurate.
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