Ten samples of n = 8 have been taken from a manufacturing process. The average of the means is A cm. The average sample range for the 10 samples was B cm.
A=30, B=10, C=82, D=84, E=280, F=320, G=40, H=200, I=20, J=26, K=11, L=3, M=6, N=95
a. Calculate the X-bar and the R control Charts
b. One Sample average is above the UCL of the X-bar chart, what should be done?
c. One sample average is below the LCL of the R chart, what should be done?