coefficient of pirce elasticity of demand

例句：

1. 1. The Pearson correlation coefficient measures the strength of linear relationships between variables.
   皮尔逊相关系数衡量变量之间线性关系的强度。
2. 2. The Pearson correlation coefficient is a statistical measure used to determine the degree of association between twovariables.
   皮尔逊相关系数是一种统计方法，用于确定两个变量之间的关联程度。
3. 3. The Pearson correlation coefficient is commonly used in data analysis to identify patterns and trends in data.
   皮尔逊相关系数在数据分析中常被用来识别数据中的模式和趋势。