结果样本县的妇幼卫生情况波动范围较大。
Results Maternal and child health situations were various in the sample counties.
研究结果表明，不论是基于总样本还是各个子样本，信息对市场波动性均有统计上显著的影响；
The results indicate that the information statistically significantly influenced the market volatility whether based on the whole sample or each sub-sample.
本文通过1998-2008年间2724例公司年样本观察值证明现金流波动率与公司价值显著负相关。
This paper presents evidents that cash-flow volatility is negatively related to firm value using a large sample consisting of 2724 firm-year observations from 1998-2008.
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