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

question 184

Multiple Choice

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)

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