average standard deviation

基本解释

Using the average and the standard deviation, you can interpret that 68% of the attempts were between .2 and 1.3 seconds.
使用平均值和標準偏差，您可以說明，68% 的嘗試是在 0.2 秒到 1.3 秒之間。
Measurements: Glucose variability was calculated for all subjects as the average and standard deviation of glucose, the mean amplitude of glycemic excursions, and the glycemic lability index.
觀察指標：（測定所有患者不同時段血糖），計算血糖平均值及標準差、平均血糖波動幅度、血糖不穩指數三項指標來反應血糖變異性。
The report covers each student's exam mark, usual-time mark, overall mark, as well as the whole class' average, standard deviation, maximum, minimum, range, mark distribution and makeup information.
考試質量分析報告的內容包括每個學生的考試成勣、平時成勣、縂評成勣、全班的平均分、標準差、最高分、最低分、全距、以及補考和成勣分佈情況。

7% 77% is class average and the standard deviation was 17% so you can see where things lie. 50% is a pass.
7是平均水平，標準偏差是%,這就是事情所在，50%就及格。
麻省理工公開課 - 固態化學導論課程節選

Thus, a reading above 50% for bullish sentiment would be one standard deviation above average and a reading of 41% for bearish sentiment would be one standard deviation above the average.
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Bullish sentiment is just slightly above one standard deviation from the historical average and bearish sentiment is within one standard deviation.
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Placing asset categories on the efficient frontier requires knowing their historical average return and standard deviation.
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