National scan, INC., sells radio frequency inventory tags. monthly sales for a 7 month period are as follows
month sales (000) units
feb......... 19
march..............18
apr.................15
may................20
june................18
july..................22
aug..................20
you must forecast september sales volume using a linear trend equation, a 5 month moving average, exponential smoothing wih a smoothing constant equal to.20 assuming a march forecast of 19(000), the naive approach, a weighted average using .60 for august, .30 for july, and .10 for june. which method seems least appropriate. what does use of the term sales rather than demand presume?