Increased volatility has also made conventional price signals for assessing supply tightness less effective.

价格波动性的加剧，也导致衡量供应状况的传统价格信号的有效性降低。

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The spokesperson added that the guideline had been effective as a prudential measure for maintaining stability in the banking system during a period of extreme volatility in property prices.

该发言人又指出，七成按揭上限指引是一项审慎措施，曾在物业价格大幅波动的期间，有效维持银行体系的稳定。

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This paper simulates the volatility of Shanghai stock index by ARCH Models and the result shows that GARCH (1, 1) model is effective in the simulation of the volatility of Shanghai stock index.

利用ARCH类模型对上证指数的波动进行了拟合，结果表明GARCH（1，1）模型对上证指数波动具有较好的拟合效果。

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Pomeranets and Weaver reviewed market quality to answer the following questions: Is a Robin Hood tax effective at reducing volatility and speculative trading?

FORBES: Risk Of Going Hungary With A Financial Transaction Tax

Simply watching the VIX has failed traders in recent years, and technical tools like Bollinger bands and Starc bands have proven to be more effective measures of volatility and risk.

FORBES: Gain an Edge with Volatility Analysis

While leveraged volatility ETNs do come closer to replicating the actual performance of VIX, these instruments are really only effective when held for short periods of time (as volatility lag eats away at the returns over time).

FORBES: Profiting From Fear With Exchange-Traded VIX Notes