An R Chart Is to Be Developed for Use in Quality

question 60

Multiple Choice

An R Chart is to be developed for use in quality control.The average of the ranges is calculated to be 0.60.This was based on several samples of size 7 each.What would the lower control limit be?

• A)0.046
• B)0.000
• C)1.154
• D)4.200
• E)0.004