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Calculate the class interval of the required class.
Class | \(1\) | \(2\) | \(3\) | \(4\) | \(5\) |
Interval | 4 - 15.9 | 15.9 - 27.9 | 27.9 - 32.8 | 32.8 - 48.8 | 48.8 - 52.1 |
The class interval of class \(3\) is .
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