#### 为什么说皮尔逊相关系数是刻画了线性相关性？

统计/机器学习 概率分布 回归分析 描述性统计    浏览次数： 278

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SofaSofa数据科学社区 DS面经 问答 实战

zl_pku   2018-11-12 15:57

3

"If a relationship between two variables is not linear, the rate of increase or decrease can change as one variable changes, causing a "curved pattern" in the data. This curved trend might be better modeled by a nonlinear function, such as a quadratic or cubic function, or be transformed to make it linear. Plot 4 shows a strong relationship between two variables. However, because the relationship is not linear, the Pearson correlation coefficient is only +0.244."

SofaSofa数据科学社区 DS面经 问答 实战

Ethan16   2018-11-12 11:29

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