I have sales data for 7 years on a daily basis with breaks for the weekends.
I have a few questions
- Should I aggregate it to a weekly or monthly level?
- I would like to forecast for 'h' steps ahead. How should I make the test and training set?
- To forecast do I need the future estimates of the exogenous variables as well?
- What if I do not have the future estimates?
I will be using R to do the analysis.