Use the information below to answer the following question(s).
An inspector visually inspects 10 samples of 200 computer monitors each for defects.Using trained judgement,the inspector either accepts or rejects the monitors based on whether they are flawless.The table below gives the results of these inspections from the 10 samples:

-What is the LCL for a p chart?
A)0.050
B)0.000
C)0.053
D)0.0091

Question

Use the information below to answer the following question(s).
An inspector visually inspects 10 samples of 200 computer monitors each for defects.Using trained judgement,the inspector either accepts or rejects the monitors based on whether they are flawless.The table below gives the results of these inspections from the 10 samples:
 
-What is the LCL for a p chart?
A)0.050 
B)0.000 
C)0.053 
D)0.0091

Quizplus · Accepted Answer

The Lower Control Limit (LCL) for a p chart can be 0.000 because control limits are calculated based on the sample proportions and their standard errors. If the calculated LCL is negative, it is set to 0, since a negative proportion does not make sense in the context of a p chart, which measures the proportion of defective items in a sample.

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