Statistical Quality Control - MM

What is Statistical Quality Control (SQC)?

• A technique for total quality management

• A method for measuring customer satisfaction

• A set of statistical tools and techniques for monitoring and controlling quality

• A framework for employee training and development

Who invented the Galton Board that demonstrates Central Limit Theorem

• William Galton

• Francis Galton

• Galton De Gama

Central Limit Theorem states that the distribution of sample means approximates a normal distribution as the sample size gets larger.

• TRUE

• FALSE

___ Chart is the basis of Central Limit Theorem

• X Chart

• R Chart

• Pie Chart

What are the two control limits of the x̄ chart?

• Higher and Lower limits

• Upper and Lowest limits

• Upper and Lower Limits

x̄ chart is also know as?

• x̄-bar chart

• x̄-men chart

• x̄-y chart

What does the central line on a p-chart represent?

• The overall average proportion of nonconforming units in the population

• The upper control limit for the proportion of nonconforming units

• The lower control limit for the proportion of nonconforming units

• The average proportion of nonconforming units in the sample

When interpreting a control chart, what does it mean if a data point falls outside the control limits?

• The process is operating as expected.

• The process is experiencing normal variability.

• The process is producing high-quality products.

• The process is out of control and requires investigation.

In a c-chart, what does each data point represent?

• The proportion of nonconforming units in a population

• The range of values in a sample

• The average value of a characteristic in a sample

• The number of nonconforming units in a sample

Which of the following statements about Statistical Quality Control is true?

• It focuses solely on meeting customer specifications.

• It relies on intuition and guesswork.

• It helps organizations improve processes and reduce variation.

• It is only applicable to manufacturing industries.