What is a time series model and how do you do the calculation of ACF and PACF?

What is a time series model and how do you do the calculation of ACF and PACF?

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

分类: problem-solving

标签: Apple Data Science

目标岗位: Data Scientist

目标公司: Apple

参考答案摘要

回答要点：Explain AR/MA/ARIMA; ACF measures correlation at lags; PACF isolates direct lag effect. Use to choose AR (PACF cutoff) and MA (ACF cutoff) orders.

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