What type of control chart would you use to chart this data?
At a Newcar plant, each car is checked against a list of possible problems: missing knobs, scratched paint, and so on. All problems must be fixed before cars can be shipped. Glen uses a hand-held computer to keep track of the number of problems found on each car. The last car had 11 problems.

A. c

B. np

C. p

D. X and R

Question

What type of control chart would you use to chart this data?
At a Newcar plant, each car is checked against a list of possible problems: missing knobs, scratched paint, and so on. All problems must be fixed before cars can be shipped. Glen uses a hand-held computer to keep track of the number of problems found on each car. The last car had 11 problems. 

A. c 

B. np 

C. p 

D. X and R

kropot72 · Answer

Only one type of control chart among the choices is suitable for this situation. If you have available descriptions of the c, np, p and X-bar and R charts, you should have no trouble in selecting the correct type. You will find the information needed to answer this question here: http://www.isixsigma.com/tools-templates/control-charts/a-guide-to-control-charts/