In time series analysis, the process of transforming a non-stationary series into a stationary series is known as _______.
- Aggregation
- Decomposition
- Differencing
- Smoothing
The blank is filled with "Differencing." Differencing is the process of transforming a non-stationary time series into a stationary one by computing the differences between consecutive observations. This helps remove trends and seasonality, making the series more amenable to modeling and analysis.
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