You Want to Develop a Three-Sigma R-Chart

question 11

Multiple Choice

You want to develop a three-sigma R-chart. You know the average range is 12 based on several samples of size 6. Which of the following is the resulting LCL?

• A) 20.0
• B) 18.3
• C) 7.02
• D) 5.6
• E) 0.0