Use the information below to answer the following question(s).Use the "Factors for Control Limits" Table A.3 from the textbook where required:
A control chart needs to be developed to determine if the temperature for a process is within control limits.Five samples each having 4 observations are taken and the sample measurements (temperature in degrees F)are noted in the table below:

-What is the UCL for a R chart?
A)3.68
B)8.398
C)3.125

Question

Use the information below to answer the following question(s).Use the "Factors for Control Limits" Table A.3 from the textbook where required:
  A control chart needs to be developed to determine if the temperature for a process is within control limits.Five samples each having 4 observations are taken and the sample measurements (temperature in degrees F)are noted in the table below:
 
-What is the UCL for a R chart?
A)3.68 
B)8.398 
C)3.125

Quizplus · Accepted Answer

The Upper Control Limit (UCL) for a R chart is calculated based on specific formulas involving the average range (R-bar) and a constant (D4) which depends on the sample size. The value of 8.398 suggests it was calculated for a specific scenario, indicating it's the UCL for that R chart. Other options do not represent typical UCL values for R charts.

Use the Information Below to Answer the Following Question(s)