1. A restaurant monitors its customer's complaints. Here are the percent of customers with the following complaints:
With this information, which of the following is a Pareto chart of the data?
A. 
B. 
C. 
2. A process is out of control if
A. one point outside the control limits is found.
B. there are nine consecutive points above or below the mean.
C. Both choices are correct.
3. In constructing an s chart for a process, the estimate of the standard deviation is s = 0.967, based on samples of size 6. The center line for the chart will be at
A. 0.920.
B. 0.967.
C. 0.928.