You are developing a quality plan for a new grocery delivery service. You want to track how many errors are made in the items loaded into the delivery boxes. You plan to randomly check 100 items at various times during the day. What type of control chart could you use? Briefly explain why you chose this chart. Quality characteristic Variable Attribute Type of attribute n31 x - and moving range no charts yes Defective Defect 1 210 or Constant p- or no- Constant computer no X - and R-charts Sample sampling available? chart unit? no C-chart yes p-chart with variable sample X- and s-charts U-chart Size