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2 cards from this section. Quick, good the night before a test.
What does AR stand for in time series analysis?
Think about how past values are used.
What is the purpose of the MA model?
Consider how noise in data can affect predictions.
What does ARIMA stand for?
Remember what integration refers to in time series.
True or False: The MA model is primarily used for stationary time series.
Focus on when noise stabilizes in the data.
Design an ARIMA model for time series data displaying both trend and seasonality. How would you identify the parameters (p, d, q)?
Use statistical tests to ensure your differencing helps achieve stationarity.
Given a time series with a cyclical component, explain how ARMA and ARIMA would handle this differently.
Reflect on how each model approaches data transformation.
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