This is a beta course, so its structure, chapters, and examples may continue to change.协方差与相关系数 This article is being translated. Please check back soon. Previous方差与标准差学习方差和标准差的定义、性质、计算方法等Next随机变量的数字特征综合练习题随机变量的数字特征章节的综合练习题，涵盖所有重要知识点
