Find the Control limits for the Averages charts
The mean of Ranges of a process sample collected across 20 samples is 6, and the mean of averages is 10 with the sample size of 8 per sample. The Control limits for the Averages charts are
OPTIONS
- 6,14
- 7, 13
- 7.76, 12.24
- 8.1, 11.9
ANSWER
7.76, 12.24
EXPLANATION
Using Control Chart constants, the Control limits for the Averages charts are 7.76, 12.24.
