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标准差指标

标准差(StdDev)是用于判断趋势和市场波动性的技术指标。该指标衡量相对于移动平均的波动范围。标准差常用作其他技术指标的组成部分。

标准差

例如,在计算布林带时,你要将标准差的值加入移动平均。

市场在该指标值高时看作是波动的,此时价格远离移动平均。如果市场是平坦的,那么价格接近移动平均,这代表了低波动性。

价格易变的时期和平静的时期相继交替,因此标准差指标的分析策略也十分简单。如果指标值锅底,即市场平坦,那么你应该期待活动加剧。反之亦然,如果指标值显示非常高的值,那么市场很快就会归于平静状态。

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