how to aggregate time series in multiple markets how to aggregate time series in multiple markets how to aggregate time series data in multiple markets how do i aggregate time series how to aggregate time series how to aggregate time series data in multiple markets how to aggregate time series data in multiple markets how to aggregate time series data age and population data how to aggregate a mkt model how do i aggregate data in a time series can i aggregate revenue data in multiple markets? what is the armama model used for is an arima model a time series how to aggregate time series data why do i need an arima model how to aggregate time series data in multiple markets what is the best way to combine data for every market when is it time to aggregate data in multiple markets how to aggregate time series data in multiple markets