Answer:
Adjusted forecast for January is 640
Step-by-step explanation:
given,
Demand forecast of a certain product = 800 units
averaged over all months = 12 months
January monthly index = 0.8
We have to find seasonally-adjustment sales for January
Adjusted forecast = ( Demand ) x ( monthly index )
= 800 x 0.8
= 640
Adjusted forecast for January is 640