product moment correlation coefficient

例句：

1. 1.The product moment correlation coefficient is a statistical measure that measures the relationship between two variables.
   产品相关系数是一个统计量，用于衡量两个变量之间的关系。
2. 2. The correlation coefficient between temperature and precipitation is high, indicating a strong relationship.
   温度与降水之间的相关系数很高，表明它们之间有很强的关系。
3. 3. The correlation coefficient helps us understand the relationship between different variables in a dataset.
   相关系数帮助我们理解数据集中不同变量之间的关系。