The model was used to predict the reaction results of fixed-bed reactor and the average deviations of the calculated values from experimental data were less than 20%.

将此动力学模型预测固定床反应结果，计算值与实测值相对平均误差小于20%。

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Each pixel is then read, and its red, green, and blue deviations are measured from each of the average colors recorded in the previous step.

然后读取每个像素，并且通过上一步中记录的每个平均颜色测量其红、绿和蓝色偏差。

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The IMF reckons that, if volatility moved to two standard deviations above its post-1990 average, emerging-market debt spreads would more than double.

货币基金组织估计，如果波动率的两个标准差超过了1990年以后的平均值，新兴市场的利差将扩大两倍。

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I computed the returns on the stocks, bonds, and oil for every year from 1983 and I computed the average returns, which I take as the expected returns, I took the standard deviations, and I took the covariance.

我计算了从1983年以来每年的股票,债券和石油的收益，从而得出平均收益率，这些平均收益率作为预期收益率，然后算得标准差及协方差。

耶鲁公开课 - 金融市场课程节选

Bullish sentiment is unusually low, but it would have to fall below 18% to be considered extraordinarily low (two standard deviations below average).

FORBES: Continued European Concerns Sink Bullish Sentiment Near Two-Year Low

Other companies re-evaluate your bill every few months to account for big deviations in your average energy usage and adjust your payments up or down accordingly.

WSJ: Spread Out Your Energy Costs

We found that when earnings yield spreads during the prior five years averaged more than two standard deviations above the average, investors on average earned (annualized) returns on stocks of 21.3% for the following year, 17% for the next two years, 14.6% for the next three years and 8.3% over five years.

FORBES: What is the Earnings Yield Spread Telling Us?