average standard deviation

基本解釋

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(biāo)準(zhǔn)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(biāo)：（測(cè)定所有患者不同時(shí)段血糖），計(jì)算血糖平均值及標(biāo)準(zhǔn)差、平均血糖波動(dòng)幅度、血糖不穩(wěn)指數(shù)三項(xiàng)指標(biāo)來反應(yīng)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(zhì)量分析報(bào)告的內(nèi)容包括每個(gè)學(xué)生的考試成勣、平時(shí)成勣、縂評(píng)成勣、全班的平均分、標(biāo)準(zhǔn)差、最高分、最低分、全距、以及補(bǔ)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(biāo)準(zhǔn)偏差是%,這就是事情所在，50%就及格。
麻省理工公開課 - 固態(tài)化學(xué)導(dǎo)論課程節(jié)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.
FORBES: How Much Should You Rely On Sentiment Surveys?
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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