什么是均值填补（mean imputation）？为什么通常不推荐？

What is mean imputation for missing data, and why is it considered a bad practice?

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: medium

标签: Statistics, Missing Data, Imputation, Bias

参考答案摘要

Mean imputation replaces missing values with the column mean. It reduces variance and can bias estimates. It weakens relationships/correlations between features. It can lead to overconfident (too narr...

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