A forecast based on the previous forecast plus a percentage of the forecast error is:

a$.$ naive forecast

b$.$ exponentially smoothing forecast

c$.$ simple moving average forecast

d$.$ centered moving average forecast

e$.$ Associative forecastOrganizations that decided to produce a good or service itself $($in source$).$ has the following advantage: a$.$ Ability to oversee the entire process b$.$ Access to state of the art products$/$services c$.$ Low investment risk d$.$ High strategic flexibility and improved cash flow