I have 2000 profit centers with week wise business figures for each week of last 5 years.Using this data I need to predict next week / month business figures for each profit center taking in account the seasonality. Which technique would be appropriate ? I have not used any technique other than regression for predicting continuous variable. I had a glance at ARIMA but not sure whether it would be appropriate. Is there any better technique so that I can go through it?
Thank for your time.