UPSKILL MATH PLUS
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Learn more\(48\) students were asked to write the total number of hours per week they spent on watching television. With this information find the standard deviation of hours spent for watching television.
| \(x\) | \(6\) | \(7\) | \(8\) | \(9\) | \(10\) | \(11\) | \(12\) |
| \(f\) | \(3\) | \(6\) | \(9\) | \(13\) | \(8\) | \(5\) | \(4\) |
Answer:
The standard deviation \(=\)
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