hunzlaaftab saysNovember 20, 2020 at 2:03 pmHello, I do not understand how question 3 was solved. Can you please help? Many thanksLog in to Reply

John Moffat saysMay 15, 2020 at 2:55 pmI assume you are asking about question 4.As I explain in my free lectures on this, the seasonal variations must add up to 0. 5.8 – 8.4 + 10.2 = + 7.6 Therefore for the total of all 4 to be zero, the missing one must be – 7.6.Have you watched my free lectures on forecasting?Log in to Reply

hunzlaaftab says

Hello, I do not understand how question 3 was solved. Can you please help? Many thanks

fay888888 says

could you explain how did you get -7.6? please.

John Moffat says

I assume you are asking about question 4.

As I explain in my free lectures on this, the seasonal variations must add up to 0.

5.8 – 8.4 + 10.2 = + 7.6

Therefore for the total of all 4 to be zero, the missing one must be – 7.6.

Have you watched my free lectures on forecasting?