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 value of the average range R-bar?
A)3.68
B)8.398
C)3.125
D)5.252

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 value of the average range R-bar?
A)3.68 
B)8.398 
C)3.125 
D)5.252

Quizplus · Accepted Answer

The average range is calculated by dividing the sum of the ranges by the number of ranges. In this case, the sum of the ranges is 18.4 and the number of ranges is 5, so the average range is 18.4 / 5 = 3.68.

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