Mathematics · Time Series & Forecasting
Which two requirements must hold true for time series forecasts to remain valid and reliable over time?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The trend line must be stationary and extrapolation must be avoided
- 2Past data must be perfectly linear and cyclic component must be zero
- 3No seasonal variations should exist in the historical data
- 4Past historical trends must continue unchanged and the seasonal variation pattern must persist✓
Correct answer
Past historical trends must continue unchanged and the seasonal variation pattern must persist
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