When a Process Variable Is Normally Distributed,there Are Two Important

Multiple Choice

When a process variable is Normally distributed,there are two important process characteristics that need to be monitored: the mean,,and the standard deviation,.Which control chart would be used to monitor the process spread?

A) The R chart
B) The chart
C) The s chart
D) Any of the above charts would be appropriate to monitor process spread.
E) Only A and C monitor process spread.