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Which of the following statements is true?
1. P and nP charts cannot use limit gauges
2. P charts are difficult to understand
3. P charts cannot recognize different degrees of defectiveness in units
2. P charts are difficult to understand
3. P charts cannot recognize different degrees of defectiveness in units
- a)Only 2
- b)Only 1
- c)Only 3
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which of the following statements is true?1. P and nP charts cannot us...
P and nP charts are statistical process control charts that are used to monitor the proportion of nonconforming units in a process. They are commonly used in quality management to track the performance of processes and detect any variations or defects.
"P charts cannot recognize different degrees of defectiveness in units" is the true statement among the given options. Let's understand why this statement is true and why the other options are incorrect.
1. P and nP charts cannot use limit gauges
This statement is incorrect. P and nP charts can use limit gauges as part of the data collection process. Limit gauges are used to determine whether a unit is conforming or nonconforming based on specific criteria. The data collected using these gauges can be used to construct P and nP charts.
2. P charts are difficult to understand
This statement is incorrect. P charts are relatively simple and easy to understand. They are based on the binomial distribution and track the proportion of nonconforming units over a period of time or across different batches. The chart displays the control limits and the data points, making it easy to identify any patterns or trends.
3. P charts cannot recognize different degrees of defectiveness in units
This statement is true. P charts are designed to monitor the proportion of nonconforming units, but they do not provide information about the severity or degree of defectiveness in each unit. They simply indicate whether a unit is conforming or nonconforming based on predetermined criteria. If there are different degrees of defectiveness in the units, the P chart will not be able to differentiate them.
In conclusion, the correct statement is that P charts cannot recognize different degrees of defectiveness in units. This is because P charts are focused on monitoring the proportion of nonconforming units and do not provide information about the severity or degree of defectiveness.
"P charts cannot recognize different degrees of defectiveness in units" is the true statement among the given options. Let's understand why this statement is true and why the other options are incorrect.
1. P and nP charts cannot use limit gauges
This statement is incorrect. P and nP charts can use limit gauges as part of the data collection process. Limit gauges are used to determine whether a unit is conforming or nonconforming based on specific criteria. The data collected using these gauges can be used to construct P and nP charts.
2. P charts are difficult to understand
This statement is incorrect. P charts are relatively simple and easy to understand. They are based on the binomial distribution and track the proportion of nonconforming units over a period of time or across different batches. The chart displays the control limits and the data points, making it easy to identify any patterns or trends.
3. P charts cannot recognize different degrees of defectiveness in units
This statement is true. P charts are designed to monitor the proportion of nonconforming units, but they do not provide information about the severity or degree of defectiveness in each unit. They simply indicate whether a unit is conforming or nonconforming based on predetermined criteria. If there are different degrees of defectiveness in the units, the P chart will not be able to differentiate them.
In conclusion, the correct statement is that P charts cannot recognize different degrees of defectiveness in units. This is because P charts are focused on monitoring the proportion of nonconforming units and do not provide information about the severity or degree of defectiveness.
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Which of the following statements is true?1. P and nP charts cannot us...
P and nP charts are control charts for attributes. They can use limit gauges and are easy to understand. P and nP charts cannot recognize different degrees of defectiveness in units.
P charts:
- P charts are used for evaluating fraction defectives when subgroup size is not constant.
- Control charts for defectives are used to identify samples which are out of acceptable limits. These charts provide information to the management to initiate corrective actions.
nP chart:
- It is the simplified version of P chart.
- This chart is used when number of items in a sample is constant.
So, only 3rd statement is correct.
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Which of the following statements is true?1. P and nP charts cannot use limit gauges2. P charts are difficult to understand3. P charts cannot recognize different degrees of defectiveness in unitsa)Only 2b)Only 1c)Only 3d)None of the aboveCorrect answer is option 'C'. Can you explain this answer?
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