To set -chart upper and lower control limits,one must know the process central line,which is the
A)average of the sample means.
B)total number of defects in the population.
C)percent defects in the population.
D)size of the population.
E)average range.

Question

To set  -chart upper and lower control limits,one must know the process central line,which is the
A)average of the sample means. 
B)total number of defects in the population. 
C)percent defects in the population. 
D)size of the population. 
E)average range.

Quizplus · Accepted Answer

The process central line is the average of the sample means, which will help in calculating the upper and lower control limits for the 11eab475_23ab_666e_acdb_a54d4c9bad84_TB4044_11 chart. The other options listed are not relevant to setting control limits for this type of chart.

To Set -Chart Upper and Lower Control Limits,one Must