什么是离群点（outlier）？如何检测？

What is an outlier, and how can you detect outliers?

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, Outliers, Z-score, IQR

参考答案摘要

An outlier is a data point far from the bulk of observations and can distort analysis/model performance. Common detection methods: Z-score / standard deviation rule (e.g., |z| > 3) IQR rule (outside [...

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