arima model is the same as seasonal what model to use for long seasonal periods how to use r to measure seasonality r model of seasonal lag what is seasonal difference arima model long seasonality when calculating seasonality in r, which model is erroneous? what model should xreg be used for r model with seasonal period arima error arima model with long seasonal periods when do the seasonal period return r error when calculating a seasonal period when r arima the lag is longer than xreg what is the seasonal lag of a arima model what model has long seasonal periods when r model for seasonal deviation where is a long seasonality in r what is the seasonal range for r what model should be used for seasonal