Question

11. Which of the following is true about mean chart and range chart in the statistical process
control:
Both the mean charts and the range charts must be used to conclude whether the process
is in control or not.
b. Either the mean charts or the range charts can be used to conclude whether the process is
in control or not.
Neither the mean charts nor the range charts can be used to conclude whether the
process is in control or not.
d. CP or CPK are used to condude whether the process is in control or not.
None of the above.
ustomer service employees​

Answer 1

Answer:

CP or cpk are used to confuse whether the process is in the above