Some traders like to use standard deviation channels, often called Bollingerbands, which expand and contract in response to market volatility.
有些交易者喜欢用标准背离通道,经常被称作布林通道,根据市场波动情况它会伸缩。
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The experiment results show that it is an effective method to reflect the characteristics of real estate cycle fluctuations and forecast the price trend with the K-line theory and BollingerBands.