什么是协方差（covariance）？

What is covariance?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: easy

标签: Statistics, Covariance

参考答案摘要

Covariance measures how two variables vary together. Positive covariance means they tend to increase together; negative means one increases as the other decreases. Unlike correlation, it is scale-depe...

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