What is a time series

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Question 1: What is a time series and what are the key components of a time series? How do we "de-trend" a time series data? Provide examples.

Question 2: What makes data stationary? How do you use Auto Correlation Function (ACF) and Partial Auto Correlation Function (PACF) to determine the "stationarity" of time series data?

Reference no: EM132456755

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