Which forecasting method is based on historical data and assumes that future patterns will resemble past patterns?

A$)$ Qualitative forecasting

B$)$ Time series analysis

C$)$ Delphi method

D$)$ Market research

In a Just$-$In$-$Time $($JIT$)$ system, what is the primary focus?

A$)$ Reducing lead times

B$)$ Increasing inventory levels

C$)$ Maximizing production output

D$)$ Enhancing product variety