- a measure of dispersion obtained by extracting the square root of the mean of the squared deviations of the observed values from their mean in a frequency distribution
| 单词 | standard deviation |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 stand′ard devia′tion, [Statistics.]
Collins Concise English Dictionary © HarperCollins Publishers:: standard deviation n
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