Statistical Tools for Process Control

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Which of the following is the objective of a process control system?

To provide a statistical signal when natural variations are present

To provide a statistical signal when assignable causes of variation are present

To detect and eliminate natural variations

To detect and eliminate assignable causes of variation (correct)

What are natural variations also known as?

Assignable causes

Common causes (correct)

Process boundaries

Special causes

What are assignable variations also known as?

Assignable causes

Common causes

Special causes (correct)

Process boundaries

What is a flowchart?

A graphical representation of all the steps involved in an entire process Signup and view all the answers

What is the purpose of creating a flowchart?

To identify the steps for new processes Signup and view all the answers

What are the basic quality tools also known as?

7 QC tools Signup and view all the answers

What is the measure of central tendency and dispersion for a distribution of outputs?

Process capability Signup and view all the answers

What does it mean when a process is said to be 'in control'?

The process is free from variations Signup and view all the answers

What is the objective of discovering assignable causes in a process?

To eliminate the bad causes Signup and view all the answers

What is the other name for process maps, process flowcharts, and process flow diagrams?

Flowchart steps Signup and view all the answers

Which of the following is NOT one of the benefits of using flowcharts?

Improved communication between departments and production areas Signup and view all the answers

What is the main purpose of a check sheet?

To ensure accurate data collection Signup and view all the answers

When should a check sheet be used?

To collect data on frequency or patterns of events Signup and view all the answers

What is a histogram used for?

To communicate the distribution of data Signup and view all the answers

What is the formula for determining the interval size in a histogram?

$l = \text{{largest measurement}} - \text{{smallest measurement}}$ Signup and view all the answers

What is the first step in constructing a histogram?

Collect and count the number of measurements Signup and view all the answers

What is the example given for constructing a histogram in the text?

Spelling test scores for 20 students Signup and view all the answers

What is the formula for finding the interval size in a histogram when the number of data is less than 50?

$l = \text{{number of data}} / \text{{number of intervals}}$ Signup and view all the answers

What is the formula for finding the starting point of classes in a histogram?

$\text{{starting point}} = \text{{smallest measurement}}$ Signup and view all the answers

What is the formula for tallying the data in a check sheet?

Total the number of occurrences for each category being measured Signup and view all the answers

Which publisher released the book 'Total Quality Management, Third Edition' in 2017?

Pearson India Education Signup and view all the answers

What is the title of the book released by John Wiley & Sons in 2013?

Statistical Quality Control, Seventh Edition Signup and view all the answers

Who is the author of the book 'Fundamentals of quality control and improvement, Fourth Edition'?

A. Mitra Signup and view all the answers

Which publisher released the book 'Total Quality Management' in its Third Edition in 2009?

Nhà xuất bản Trẻ Signup and view all the answers

Who is one of the authors of the book 'Total Quality Management, Third/Second Edition'?

D.H. Besterfield Signup and view all the answers

Which publisher released the book 'Fundamentals of quality control and improvement, Fourth Edition'?

John Wiley & Sons Signup and view all the answers

Who is the author of the book 'Statistical Quality Control, Seventh Edition'?

D. C. Montgomery Signup and view all the answers

Which publisher released the book 'Tìm hiểu chất lượng có phải như bạn nghĩ không'?