It is suggested that the detailed model will provide cost estimates that are within 20% of the actual values 70% of the time. Pred (0.20) = 0.70.
Ni alipendekeza kuwa mfano wa kuigwa kina itatoa makadirio ya gharama walio ndani ya 20% ya maadili halisi 70% ya muda. Pred (0.20) = 0.70.