Which of the following statements accurately describes how costs and benefits are calculated? a. cost-benefit analysis is an attempt to get benefits to exceed costs. b. money is an important cost but not the only one. c. benefits do not always increase as costs increase. d. calculations of cost and benefit are based on personal preferences.

Statistical process control charts: a. indicate to the operator the true quality of material leaving the process. b. display upper and lower limits for process variables or attributes and signal when a process is no longer in control. c. indicate to the process operator the average outgoing quality of each lot. d. display the measurements on every item being produced. e. are a graphic way of classifying problems by their level of importance, often referred to as the 80-20 rule.