standard deviation
noun [ C ] mathematics specialized uk/ˌstæn.dəd ˌdiː.viˈeɪ.ʃən/ us/ˌstæn.dɚd ˌdiː.viˈeɪ.ʃən/
标准偏差
a number that shows the amount by which members of a group are different from the mean (= average) value for the group
Price dispersion in the region is measured by the standard deviation of prices for a product across the six economies. 该地区的价格差异是通过一种产品在6个经济体的价格标准差来衡量的。
- More examples
- He would calculate the standard deviation of players' won-lost records as a check against his computer-generated projections.
- All of the children scored within one-half standard deviation of the mean on the test.
- Table 2 presents the means and standard deviations for frequency and duration.
- A machine is designed to produce rods 2 cm long with a standard deviation of 0.02cm.