Which type of inventory includes products that are currently being

processed in the production system?

a$)$ Raw materials inventory

b$)$ Work$-$in$-$progress inventory

c$)$ Finished goods inventory

d$)$ Safety stock inventory

Which quality control tool is used to identify the most important factors

affecting a particular problem or process?

a$)$ Pareto chart

b$)$ Scatter plot

c$)$ Histogram

d$)$ Control chart