| 21. | It is rare that the true population standard deviation is known.
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| 22. | The volatility was gauged by standard deviation, which measures the range of returns.
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| 23. | The standard deviations will then be the square roots of the respective variances.
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| 24. | The process mean ( average ) and standard deviation are calculated.
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| 25. | Standard deviation, in turn, is the square root of the variance.
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| 26. | Both repeatability and reproducibility are usually reported as a standard deviation.
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| 27. | This holds ever more strongly for moves of 4 or more standard deviations.
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| 28. | The score is normalized by the standard deviation of these differences.
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| 29. | By comparison, the standard deviation of pharmaceutical stocks has been 27 . 6.
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| 30. | Our compatibility fitness score is within the standard deviation for median households worldwide.
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