Set the acceptable range of the control chart using the average value of the block. Set the acceptable range on the control chart as the average value of each block in
Figure 2. This means ±2SD of the block average, arrows indicate blocks outside the acceptable range. One point on the control chart is the average of 10 samples, and the results of 10 samples are reviewed to determine whether there is an abnormality in quality control.
Abbreviations: seq, sequence; SD, standard deviation.
pISSN 1738-3544
