统计学里观察数据（observational）和实验数据（experimental）有什么区别？

What is the difference between observational and experimental data?

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, Study Design, Observational Study, Experiment

参考答案摘要

Observational data comes from observing variables without intervention (good for correlation, weaker for causality). Experimental data comes from controlled experiments where you manipulate one or mor...

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