A point which is outside of the lower control limit on an R-chart Select one: O a. should be ignored unless another point is outside that limit O b. should be ignored because it signifies better than...

Extracted text: A point which is outside of the lower control limit on an R-chart Select one: O a. should be ignored unless another point is outside that limit O b. should be ignored because it signifies better than average quality O c. is an indication that no cause of variation is present O d. should be investigated because an assignable cause of variation might be present O e. is impossible since the lower limit is always zero


Extracted text: