a measure of the extent to which values of a variable are scattered about the mean value in a frequency distribution and equal to the square root of the mean of the squared deviations of the values from the mean
| 单词 | standard deviation |
| 释义 | standard deviationnouna measure of the extent to which values of a variable are scattered about the mean value in a frequency distribution and equal to the square root of the mean of the squared deviations of the values from the mean |
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