W coefficient

例句：

1. 1. In the study of economics, the W coefficient is used to measure the impact of a variable on another.
   在经济学研究中，W系数被用来测量一个变量对另一个变量的影响。
2. 2.The W coefficient was calculated using the data from the experiment.
   通过实验数据计算得出了W系数。
3. 3.The W coefficient has been shown to be an important factor in predicting stock prices.
   研究表明W系数是预测股票价格的一个重要因素。