Mathematics · Time Series Analysis
What does weak stationarity imply in the context of a time-series process?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The series has a constant mean and constant variance over time, and autocovariance depends only on lag.✓
- 2The series displays a clear upward or downward linear trend over time.
- 3The series exhibits predictable seasonal variation.
- 4The series has an exponentially growing variance over time.
Correct answer
The series has a constant mean and constant variance over time, and autocovariance depends only on lag.
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