Question content area

Part $1$

The least predictable pattern of$$ time$-$series variation is called

Part $2$

A$.$

random.

B$.$

horizontal.

C$.$

seasonal.

D$.$

trend.

A$.$

If the lead time to buy raw materials is$$ long, the forecasts go farther out into the future.

B$.$

In a$$ make$-$to$-$stock environment, forecasts tend to be more detailed and can get down to specific individual products.

C$.$

In a$$ make$-$to$-$order environment, the forecasts tend to be for groups of products.

D$.$

All of the above statements are true.