统计相关系数r与r2的区别

Correlations are a great tool for learning about how one thing changes with another. After reading this, you should understand what correlation is, how to think about correlations in your own work, and code up a minimal implementation to calculate correlations.

关联是学习一件事如何变化的好工具。 阅读此内容后，您应该了解什么是相关性，如何在自己的工作中考虑相关性，并编写一个最小的实现来计算相关性。

Correlation is an abstract math concept, but you probably already have an idea about what it means. Here are some examples of the three general categories of correlation.

关联是一个抽象的数学概念，但是您可能已经对它的含义有所了解。 以下是相关的三个常规类别的一些示例。

As you eat more food, you will probably end up feeling more full. This is a case of