Q. If the value of D4 = 2.547, D3=0, then what is the UCL and LCL for the R chart? (Solved)
1. UCL=1.5, LCL=.4
2. UCL= 1.2, LCL=.2
3. UCL=1.5, LCL=0
4. UCL=1.6, LCL=0
- d. UCL=1.6, LCL=0
1. UCL=1.5, LCL=.4
2. UCL= 1.2, LCL=.2
3. UCL=1.5, LCL=0
4. UCL=1.6, LCL=0