Table 5.11
Factors for Calculating Three-Sigma Limits for the Chart and R-Chart
Source: 1950 ASTM Manual on Quality Control of Materials,copyright American Society for Testing Materials.Reprinted with permission.
-Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world.Results from the last five samples are shown in the table.Calculate control limits for a chart that will monitor process consistency.The correct control limits as (LCL,UCL)are:
A)(-5.37,5.37)
B)(0.00,5.37)
C)(0.00,6.03)
D)(0.00,6.12)

Question

Table 5.11
Factors for Calculating Three-Sigma Limits for the  Chart and R-Chart
  Source: 1950 ASTM Manual on Quality Control of Materials,copyright American Society for Testing Materials.Reprinted with permission.
-Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world.Results from the last five samples are shown in the table.Calculate control limits for a chart that will monitor process consistency.The correct control limits as (LCL,UCL)are: 
A)(-5.37,5.37) 
B)(0.00,5.37) 
C)(0.00,6.03) 
D)(0.00,6.12)

Quizplus · Accepted Answer

The Answer of Table 5.11
Factors for Calculating Three-Sigma Limits for the  Chart and R-Chart
  Source: 1950 ASTM Manual on Quality Control of Materials,copyright American Society for Testing Materials.Reprinted with permission.
-Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world.Results from the last five samples are shown in the table.Calculate control limits for a chart that will monitor process consistency.The correct control limits as (LCL,UCL)are: 
A)(-5.37,5.37) 
B)(0.00,5.37) 
C)(0.00,6.03) 
D)(0.00,6.12)

Table 5.11 Factors for Calculating Three-Sigma Limits for the Chart and Chart