What is P and Q in ARIMA?

A nonseasonal ARIMA model is classified as an “ARIMA(p,d,q)” model, where: p is the number of autoregressive terms, d is the number of nonseasonal differences needed for stationarity, and . q is the number of lagged forecast errors in the prediction equation .

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What is auto Arima model?

An autoregressive integrated moving average, or ARIMA, is a statistical analysis model that uses time-series data to better understand the data set or predict future trends . A statistical model is autoregressive if it predicts future values based on past values.

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