If a sample of 40 units of output found 500 defects,then the center line for monitoring the average number of defects per unit of output would be
A) = 40
B) = 0)08
C) = 12.5
D) = 20,000

Question

If a sample of 40 units of output found 500 defects,then the center line for monitoring the average number of defects per unit of output would be
A) = 40 
B) = 0)08 
C) = 12.5 
D) = 20,000

Quizplus · Accepted Answer

The center line for monitoring the average number of defects per unit of output is the sample mean (x̄), which can be calculated by dividing the total number of defects by the number of units in the sample. 
x̄ = Total defects / Number of units 
x̄ = 500 / 40 
x̄ = 12.5 
Therefore, the center line is 12.5, which is choice C.

If a Sample of 40 Units of Output Found 500