Tracking Signal and Seasonality Models 

Thanks and very helpful

But, demand minus forecast value Or forecasted value minus demand

The deseasonalized demand explained in the previous lecture was different than rhe deseasonalized demand in this lecture. Am I missing something??

You did it with totally ❌wrong😂

1.This course is not easy as i thought 2.this lecture was very confusing 3.please zoom the data figures while explaining as most of us watch in mobile its not visible