Production Engineering
Assignable causes are caused due to changes in _________.
Is This Question Helpful?
Evaluate your skill level in just 10 minutes with QUIZACK smart test system.
Assignable Cause
Published: November 7, 2018 by Ken Feldman
Assignable cause, also known as a special cause, is one of the two types of variation a control chart is designed to identify. Let’s define what an assignable cause variation is and contrast it with common cause variation. We will explore how to know if your control is signaling an assignable cause and how to react if it is.
Overview: What is an assignable cause?
A control chart identifies two different types of variation: common cause variation (random variation resulting from your process components or 6Ms ) and assignable or special cause variation.
Assignable cause variation is present when your control chart shows plotted points outside the control limits or a non-random pattern of variation. Since special cause variation is unexpected and due to some factor other than randomness, you should be able to assign a reason or cause to it.
When your control chart signals assignable cause variation, your process variable is said to be out of control, or unstable. Assignable cause variation signals can be identified by use of the Western Electric rules, which include:
- One point outside of the upper control limit or lower control limit
- A trend of 6 or 7 consecutive points increasing or decreasing
- A cycle or repeating pattern
- A run of 8 or more consecutive points on either side of the average or center line.
Assignable cause variation can be attributed to a defect, fault, mistake, delay, breakdown, accident, and/or shortage in the process. Or it can be a result of some unique combination of factors coming together to actually improve the process. When assignable causes are present, your process is unpredictable. The proper action and response is to search for and identify the specific assignable cause. If your process was improved as a result of your assignable cause, then incorporate it so that the cause is retained and improvement maintained. If your process was harmed by the assignable cause, then seek to eliminate it.
3 benefits of an assignable cause
Assignable causes can be good or bad. They are signals that something unexpected happened. Listen to the signal.
1. Signals something has happened
Special or assignable cause variation signals that something unexpected and non-random has occurred in your process.
2. Specific cause
By investigating and identifying the specific cause of your signal, you can narrow in on your next steps for bringing the process back into control.
3. Can become common cause variation
Good news! You found that your assignable cause for lowered production was due to a power outage. Unfortunately, you may not be able to stop power outages in your community. If nothing is done, your assignable cause becomes a common cause.
You might not be able to stop power outages, but could you install a back-up generator? Then, if the generator doesn’t kick on, you will have an assignable cause you can do something about.
Why is an assignable cause important to understand?
Interpreting what an assignable cause tells you is important to understand.
Provides direction for action
Since an assignable cause can be a signal of something good or bad, you need to understand the different actions. Don’t ignore special or assignable causes.
Not every unusual point has an assignable cause
While at your favorite casino, you may throw a pair of dice at the craps table. Is there an assignable cause for throwing an 11 or a 10, or is it random variation? No, you would expect the process of rolling a fair pair of dice to show 10s and 11s. What about a 13? That would be unexpected and probably the result of something unusual happening with the dice. The same is true for your process. Don’t assume an assignable special cause unless your control chart signals it.
Useful for determining whether your improvements worked
When you improve the process, your control chart should send signals of special cause variation — hopefully in the right direction. If you can link that signal to the specific assignable cause of your improvement, then you know it worked.
An industry example of an assignable cause
The accounts receivable department of a retail chain started to get complaints from its customers about overbilling. Fortunately, the manager of the department had participated in the company’s Lean Six Sigma training and had been using a control chart for errors.
Upon closer review, she noticed that errors seemed to occur more on Fridays than the rest of the week. In fact, the chart showed that almost every Friday, the data points were outside the upper control limit. She was concerned that nobody was identifying that as a signal of special cause.
She put together a small team of clerks to identify why this was happening and whether there was an assignable reason or cause for it. The assignable cause was determined to be the extra work load on Fridays.
The team recommended a change in procedure to better balance the workload during the week. Continued monitoring showed the problem was resolved. She also held an all-hands meeting to discuss the importance of not ignoring signals of special cause variation and the need to seek out an assignable cause and take the appropriate action.
3 best practices when thinking about an assignable cause
Signals of special cause variation require you to search for and identify the assignable cause.
1. Document your search
If you’ve identified the assignable cause, document everything. If this cause happens again in the future, people will have some background to act quickly and eliminate/incorporate any actions.
2. Quickly identify the cause
Time is of the essence. If the cause is resulting in a deteriorating process, act quickly to identify and eliminate the cause. The recommendation is the same if your cause made the process better, otherwise, whatever happened to improve the process will be lost as time goes by.
3. Don’t ignore signals of assignable cause
Even if you get a single signal of special cause, search for the assignable cause. You may choose not to take any action in the event it is a fleeting cause, but at least try to identify the assignable cause.
Frequently Asked Questions (FAQ) about an assignable cause
1. is an assignable cause always bad .
No. It is an indication that something unexpected happened in your process. It could be a good or bad thing. In either case, search for and identify the assignable cause and take the appropriate action.
2. What are some sources of an assignable cause?
Some sources may be your process components such as people, methods, environment, equipment, materials, or information. Your process variation can come from these items and can be the assignable cause of a signal of special cause variation.
3. How do I tell if I should look for an assignable cause?
Control charts were developed to distinguish between common and special cause variation. If they signal special cause variation in your process, seek out an assignable cause and take the appropriate action of either eliminating or incorporating your assignable cause.
Final thoughts on an assignable cause
All processes will exhibit two types of variation. Common cause variation is random, expected, and a result of variation in the process components. Special cause variation is non-random, unexpected, and a result of a specific assignable cause.
If you get a signal of special cause variation, you need to search for and identify the assignable cause. Once found, you will either seek to incorporate or eliminate the cause depending on whether the cause improved or hurt your process.
About the Author
Ken Feldman
Why are variations occurred due to assignable causes?
- Home >> Category >> Mechanical Engineering (MCQ) questions and answers >> Mechanical System Design
Related Content
- Fluid Mechanics ( 75 )
- Manufacturing Processes - 1 ( 75 )
- Manufacturing Processes - 2 ( 65 )
- Material Science ( 70 )
- Theory of Machines - 1 ( 60 )
- Metrology and Quality Control ( 151 )
- Theory of Machines - 2 ( 75 )
- Heat Transfer ( 271 )
- Hydraulics & Pneumatics ( 228 )
- Thermodynamics ( 388 )
- Basic Mechanical Engineering ( 91 )
- Dynamics of Machinery ( 92 )
- Engineering Metallurgy ( 61 )
- Design of Machine Elements - 1 ( 81 )
- Mechatronics ( 60 )
- Turbo Machines ( 70 )
- Mechanical System Design ( 73 )
- Engineering Mechanics ( 103 )
- Strength of Materials ( 110 )
- Design of Machine Elements - 2 ( 69 )
➨ Post your comment / Share knowledge
Assignable causes are caused due to changes in _________
A. manufacturing process
B. material
C. inspection process
D. all of the above
Solution by Mcqs Clouds
Answer: Option D
Explanation: No explanation is available for this question!
Join The Discussion
Related Questions on Mechanical System Design Test Questions
Which equation is used to calculate thickness of an alloy steel cylinder with open ends?
A. Clavarino's equation
B. Birnie's equation
C. Lame's equation
D. None of the above
Why is autofrettage process used in pressure vessels?
A. Increase fatigue lifetime
B. To enhance carrying capacity
C. To introduce compressive residual stress in them
D. All of the above
Due to which effect, compressive residual stress of strain-hardening model is smaller than elastic-perfectly plastic model?
A. Seeback effect
B. Peltier effect
C. Bauschinger effect
Claviro's equation is applicable to cylinders with _______
A. close ends
B. open ends
C. both a. and b.
D. none of the above
Which equation is used to determine wall thickness for brittle materials?
A. Brinie's equation
B. Claviro's equation
More Related Questions on Mechanical System Design Test Questions
Read More: MCQ Type Questions and Answers
- Aerospace & Aeronautical Mcqs
- Agriculture Mcqs
- Banking Exam Questions
- Biology Mcqs
- Career Aptitude Test
- Central Superior Service Test Mcqs (CSS)
- Chemical Engineering Mcqs
- Chemistry Mcqs
- Civil Engineering Mcqs
- Computer Science MCQs
- ECAT & MCAT Entry Test Mcqs
- Economics Mcqs
- Electrical Engineering Questions
- Electronic Engineering Questions
- English for Competitive Exams
- English Literature Mcqs
- English MCQs
- General Knowledge Quiz
- Geography Mcqs
- Graduate Assessment Test Mcqs (GAT)
- Health & Physical MCQs
- Islamic Studies Mcqs
- Judiciary & Law Mcqs
- Mathematics Quizzes
- MBA Questions
- Mechanical Engineering Questions
- Medical Subjects Mcqs
- Pedagogy Mcqs
- Physics MCQs
- Placement Tests
- Science Mcqs
- Sociology Mcqs
- Software Engineering Mcqs
- Statistics Mcqs
Chapter 6 Cont.
Terms in this set (87)
Students also viewed.
SCMA 331- Exam 2 Chap 6 Supplement
Op m choice, operations & production management.
Recent flashcard sets
History 2022 exam.
Segunda prueba Cultura emprendedora
ACCT 3021 Ch. 21
Sets found in the same folder, supply chain exam 2 (chapter 16), supplement 6 statistical process control.
ISDS 3115 CONCEPTUAL CH 3 M/C
Other sets by this creator, chapter 7 cont., verified questions.
Solve the equation -10=4m+2 . If the equation is an identity or has no solution, state that fact.
Solve each proportion. − 7 26 = 1.75 m \frac{-7}{26}=\frac{1.75}{m} 26 − 7 = m 1.75
19 1 2 f t 19 \frac { 1 } { 2 } ft 19 2 1 f t
ladder leans against a building. The base of the ladder is
7 1 2 f t 7 \frac { 1 } { 2 } ft 7 2 1 f t
from the building. How high up the building does the ladder reach?
Show that every number is the limit of a sequence of irrational numbers.
Recommended textbook solutions
Statistical Techniques in Business and Economics
The Practice of Statistics for the AP Exam
Introduction to Mathematical Statistics
Introduction to Statistics and Data Analysis
Other quizlet sets, history final, accounting quiz 3.
Urinary System
HR Flashcards - Exam 2
Basic Statistics and Data Analysis
Statistics Lecture Notes, Online MCQs
- Quality Control Process
MCQs Quality Control 1
by Muhammad Imdad Ullah · Published Mar 8, 2020 · Updated Sep 5, 2021
1. The chart which is applicable when the quality of product is a discrete variable
2. Statistical quality control methods are extensively used in the industrial production process because of
3. Variation in the items produced in a factory may be due to
4. For a normal population probability of any point falling outside the 3-$\sigma$ control line is
5. The control limits for R-chart is
6. The control limits for $\overline{X}$-chart is
7. The chart that are used to deal with the characteristics which are not possible to measure, but can observe as absent or present from the product
8. Control charts consists of
9. The control limits for P-chart is
10. The control limits for C-chart is
11. To control the quality of a specific resistance of a wire, one can use
12. Control charts in statistical quality control are meant for
13. Variation due to assignable causes in the product occurs due to:
14. The faults due to assignable causes:
15. Chance or random variation in the manufactured product is:
Muhammad Imdad Ullah
Currently working as Assistant Professor of Statistics in Ghazi University, Dera Ghazi Khan. Completed my Ph.D. in Statistics from the Department of Statistics, Bahauddin Zakariya University, Multan, Pakistan. l like Applied Statistics, Mathematics, and Statistical Computing. Statistical and Mathematical software used is SAS, STATA, GRETL, EVIEWS, R, SPSS, VBA in MS-Excel. Like to use type-setting LaTeX for composing Articles, thesis, etc.
Leave a Reply Cancel reply
Your email address will not be published. Required fields are marked *
This site uses Akismet to reduce spam. Learn how your comment data is processed .
- Next story Hierarchical Multiple Regression in SPSS
- Previous story Cholesky Transformation
- Measure of Central Tendency
- Measure of Dispersion
- Measure of Position
- Chart and Graphics
- Inverse Regression Analysis
- Logistic Regression
- Model Selection Criteria
- Multiple Regression Analysis
- OLS Assumptions
- Partial Correlation
- Pearson's Correlation Coefficient
- Regression Diagnostics
- Simple Regression Analysis
- Design of Experiment (DOE)
- Estimator Properties
- Level of Significance
- Point and Inteval Estimation
- Generalized Least Squares (GLS)
- Introduction
- Remedial Measures of Heteroscedasticity
- Test of Heteroscedasticity
- Index Numbers
- Miscellaneous Articles
- Advance Multivariate
- Introduction to Multivariate Statistics
- Principal Component Analysis
- F-Distribution
- Binomial Probability Distribution
- Introduction to Probability
- Random Variables
- Sampling and Sampling distributions
- Short Questions
- Statistical Simulation
- Mathematica
- Microsoft Excel
- Statistical Package for Social Science (SPSS)
- Statistical Tables
- Markov Chain
- Random Walks
- Independent sample t-test
- Type I error
- Type II Error
- Analysing the Secular Trend
- Autocorrelation
Basic Statistics Binomial Probability Distribution Coefficient of Determination correlation Deciles Error Variance estimation Helping Tools Heteroscedasticity Homoscedasticity Introduction to Probability Kurtosis MCQs Applied Statistics MCQs BioStatistics MCQs Inference MCQs Regression Measurement scales Measure of central tendency Measure of Dispersion Measure of Position Measure of spread median Miscellaneous Articles mode Model Selection Criteria P-Value Probability Pseudo Random Number Random number generation Random Walk Random Walk Model Random Walks Range Real Life Examples Probability Regression analysis R Language R Mathematical Expression Sampling frame Secular treand Short Questions Standard Error Statistical Simulation Stochastic Processes testing of hypothesis type I error
- Job Interview: Recently Asked Questions
Statistical Quality Control Questions and Answers – Time-Weighted – Cumulative Sum Control Chart – 2
This set of Statistical Quality Control Multiple Choice Questions & Answers (MCQs) focuses on “Time-Weighted – Cumulative Sum Control Chart – 2”.
Sanfoundry Global Education & Learning Series – Statistical Quality Control.
To practice all areas of Statistical Quality Control, here is complete set of 1000+ Multiple Choice Questions and Answers .
- Get Free Certificate of Merit in Statistical Quality Control
- Participate in Statistical Quality Control Certification Contest
- Become a Top Ranker in Statistical Quality Control
- Take Statistical Quality Control Tests
- Chapterwise Practice Tests: Chapter 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
- Chapterwise Mock Tests: Chapter 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
- Apply for Statistical Quality Control Internship
- Apply for Mechanical Engineering Internship
- Buy Mechanical Engineering Books
- Buy Statistical Quality Control Books
- Practice Mechanical Engineering MCQs
Recommended Articles:
- Statistical Quality Control Questions and Answers – Time-Weighted – Cumulative Sum Control Chart – 1
- Statistical Quality Control Questions and Answers – Time-Weighted – Cumulative Sum Control Chart – 5
- Statistical Quality Control Questions and Answers – Time-Weighted – Cumulative Sum Control Chart – 3
- Statistical Quality Control Questions and Answers – Time-Weighted – Cumulative Sum Control Chart – 6
- Statistical Quality Control Questions and Answers – Time-Weighted – Cumulative Sum Control Chart – 4
- Statistical Quality Control Questions and Answers – Time-Weighted – EWMA Control Chart – 1
- Statistical Quality Control Questions and Answers – Time-Weighted – EWMA Control Chart – 3
- Statistical Quality Control Questions and Answers – Time-Weighted – EWMA Control Chart – 4
- Statistical Quality Control Questions and Answers – Time-Weighted – EWMA Control Chart – 2
- Statistical Quality Control Questions and Answers – SPC Methods and Philosophy – Statistical Basis of the Control Chart – 1
- Statistical Quality Control MCQ Questions
- Total Quality Management MCQ Questions
- C++ Algorithm Library
- Chemical Process Calculation MCQ Questions
- Probability and Statistics MCQ Questions
- Visual Basic MCQ Questions
- Event Handling in Java with Examples
- C Programs on File Handling
- Aircraft Performance MCQ Questions
- Computer Graphics MCQ Questions
- Definitions
- Financial Accounting
- Absorption Costing
- ACAMS Practice Questions
- Accounting Basics
- Accounting Cycle and Classifying Accounts
- Accounting Final
- Accounting For Managers
- Accounting for Merchandising Activities
- Accounting for Pensions
- Accounting Information Systems
- Accounting Principles
- Accounts Receivables
- Acquisition
- Activity Based Costing
- Adjusting Accounts for Financial Statements
- Advanced Business Economics
- Advertising and Public Relations
- Advertising and Sales Promotion
- An Overview of International Business
- Analysis and Forecasting Techniques
- Analyzing and Recording Transactions
- Asset Demand and Supply under Uncertainty
- Auditing and Attestation
- Behavioral and Allied Sciences
- Bonds and Long Term Notes Payable
- Brand Management
- Business Analytics
- Business Analytics & Technology Management Chapter 2
- Business Analytics & Technology Management Chapter 3
- Business Analytics & Technology Management Chapter 4
- Business Analytics & Technology Management Chapter 5
- Business Analytics & Technology Management Chapter 6
- Business and Company Law
- Business Communication
- Business Cycles
- Business Economics
- Business Environment
- Business Essentials
- Business Ethics and Governance
- Business Ethics Exam
- Business Law
- Business Law Study guide
- Business Mathematics
- Business Organisations and Environment
- Business organization and systems
- Business Process Performance
- Business Statistics
- Business Strategy
- Business Structure
- Business Studies
- California Real Estate
- Capital Assets
- Capital Budgeting
- Capital Budgeting and Managerial Decisions
- Capital Structure
- Cash Management
- Changes in Accounting Principles
- Changing Marketing Environment
- Conflict Theory
- Consolidated Financial Statements
- Consumer Behavior
- Contingency
- Controlling
- Corporate and Business Law
- Corporate Finance
- Corporate Governance
- Corporate Law
- Corporate Taxation
- Corporation
- Cost Accounting Final exam
- Cost Accumulation Systems
- Cost Allocation Techniques
- Cost and Managerial Accounting
- Cost Behavior
- Cost Management
- Cost Measurement
- Cost of Capital
- Cost Terms and Classifications
- Cost Volume Profit Analysis
- Currency Exchange Rates
- Current Assets
- Current Liabilities
- Customer Relationships and Value
- CVP Analysis and Marginal Analysis
- Debt and Bankruptcy
- Decision Makers
- Decision Makers Household Sector
- Decision Making
- Deferred Tax
- Demand for Money
- Depreciation
- Derivative Instruments and Hedging Activities
- Dividend Policy
- Dividends, Shares, and Income
- Elasticities of Demand and supply
- Employee Training and Development
- Entrepreneurship
- Environments of Business
- Error Correction
- Essence of Management
- Ethical and Professional Standards
- Ethics and Social Responsibility
- Ethics for Management Accountants
- External Financial Statements and Revenue Recognition
- Federal Securities Acts
- Financial and the Nonfinancial Sectors
- Financial Decision Making
- Financial Instruments
- Financial Intermediaries and Financial Markets
- Financial Management
- Financial Markets and Securities Offerings
- Financial Reporting
- Financial Statements
- Financial Statements and Accounting Transactions
- Fixed Assets
- Flexible Budgets and Standard Costs
- Florida Real Estate MCQs
- Fraud Internal Control and Cash
- Fundamental Accounting Principles
- Global Finance
- Global Marketing
- Global Marketing and World Trade
- Governmental Accounting State and Local
- Gross Estate
- Health and Life Comprehensive Exam
- Health and Life Practice Questions
- Health Insurance
- Hedging Instruments
- HR Management
- Human Resource Management
- Human Resource Management HRM
- Human Resource Planning
- Importance of Business Economics
- Individual Taxation
- Information Technology
- Insurance and Risk Management
- Insurance License Texas Life and Health
- Intangible Asset
- Integrated Marketing Communications and Direct Marketing
- Interactive Marketing and Electronic Commerce
- Internal Auditing and Systems Controls
- Internal Control and Cash
- International Business
- International Marketing
- International Trade
- Interpersonal and Organizational Communication
- Introduction to Business
- Introduction to Human Resource Management
- Introduction to Human Resources Assessment
- Inventory Management
- Investment Risk and Portfolio Management
- Job Order Costing
- Legal Management
- Life and Health Insurance
- Life Insurance
- Life Insurance Basics
- Life Insurance Policies
- Life Insurance Policy
- Long Term Investment
- Long Term Securities
- Management and Cost Accounting
- Management Science
- Managerial Accounting
- Managerial Accounting Concepts and Principles
- Managing Organizational Change
- Managing Production and Operations
- Managing Products and Brands
- Managing Services
- Market Segmentation Targeting and Positioning
- Marketing and Corporate Strategies
- Marketing Channels and Wholesaling
- Marketing Management
- Master Budgets and Planning
- Mergers and Acquisitions
- Microsoft Excel
- Money and Banking
- National Health Insurance
- Not For Profit Accounting
- Operations Management
- Organization and Operation of Corporations
- Organization Culture
- Organization Effectiveness
- Organizational Behavior
- Organizational Behavior Essentials
- Organizational Markets and Buyer Behaviour
- Organizational Structure and Design
- Partnership Taxation
- Partnerships
- Payroll Liabilities
- Performance Management
- Personal Selling and Sales Management
- Present Value
- Principles and Practices of Management
- Probability Analysis
- Process Costing
- Production and Operations Management
- Professional Practice
- Professional Responsibilities
- Profit Planning
- Profitability Analysis and Analytical Issues
- Profitability Analysis and Decentralization
- Project Management
- Property Plant and Equipment
- Property Plant and Equipment Exam
- Ratio Analysis
- Real Estate
- Receivables
- Reporting and Analyzing Cash Flows
- Reporting and Analyzing Long Lived Assets
- Reporting and Analyzing Receivables
- Responsibility Accounting and Performance Measures
- Revenue Recognition
- Risk and Procedures for Control
- Secured Transactions
- Service Department Costing
- Short Term Financing
- Short Term Investment
- Standard Costs and Variance Analysis
- State Health Insurance
- Statement of Cash Flow
- Statement of Comprehensive Income
- Statement of Financial Position
- Stock Market and Stock Prices
- Stockholders Equity
- Strategic Marketing Process
- Strategic Planning
- Structure of Interest Rates
- Succession and Transfer Taxes
- Supply Chain and Logistics Management
- System Analysis and Design
- Systems Controls
- Texas Real Estate
- The Management Challenge
- Total Quality Management
- Transfer Pricing
- Understanding Exchange Rates
- Understanding Interest Rates
- Understanding Interest Rates Determinants
- Value Added Tax
- Variable Costing
- Working Capital
Which of the following are assignable cause?
Correct answer: (D) All of the above
Related MCQs
- ? Which of the following is (are) important consideration(s) concerning activity times?
- ? Objective of Work Study is to improve ---------
- ? The following is not a major contributor in the development of Control Charts and Sampling plan
- ? Organizational models are
- ? The ––––––––– is the defect level for which lots are regarded as bad lots.
- ? What are the advantages of templates over diagrams?
- ? Attack strategies are
- ? Which of the following are assignable cause?
- ? Which of the following are activities of corrective maintenance?
- ? Limitations of Traditional cost accounting are
Monday, August 17, 2015
Chance & assignable causes of variation.
Links to all courses Variation in quality of manufactured product in the respective process in industry is inherent & evitable. These variations are broadly classified as- i) Chance / Non assignable causes ii) Assignable causes i) Chance Causes: In any manufacturing process, it is not possible to produce goods of exactly the same quality. Variation is inevitable. Certain small variation is natural to the process, being due to chance causes and cannot be prevented. This variation is therefore called allowable . ii) Assignable Causes: This type of variation attributed to any production process is due to non-random or so called assignable causes and is termed as preventable variation . Assignable causes may creep in at any stage of the process, right from the arrival of the raw materials to the final delivery of goods. Some of the important factors of assignable causes of variation are - i) Substandard or defective raw materials ii) New techniques or operation iii) Negligence of the operators iv) Wrong or improper handling of machines v) Faulty equipment vi) Unskilled or inexperienced technical staff and so on. These causes can be identified and eliminated and are to discovered in a production process before the production becomes defective. SQC is a productivity enhancing & regulating technique ( PERT ) with three factors- i) Management ii) Methods iii) Mathematics Here, control is two-fold- controlling the process ( process control ) & controlling the finished products (products control).
About Abdullah Al Mahmud
2 comments:.
Totally awesome posting! Loads of valuable data and motivation, both of which we all need!Relay welcome your work. maggots in mouth treatment
Bishwo.com on Facebook
Popular Articles
Like on Facebook
Join our newsletter, portal archive, basics of math, contact form.
- Privacy Policy
Production and Operations Management
31. The term ––––––––– implies the foregone profit due to inability of company to produce.
- Opportunity cost
- Marginal cost
- Overhead cost
- All of the above
32. OC curve of ideal sampling plan suggests that all lots less than 3% defectives have the probability of acceptance of –––––––––.
33. Which of the following are the objectives of a good maintenance system?
- Minimisation of wear and tear of machines
- Ensuring maximum plant availability
- Both (A) and (B)
- None of the above
34. Inherent Safety' is one of the principle of good layout. In context of layout, this can be achieved by the following
- Clear gangway
- Location of material and material handling system
35. In case of an OC curve, the risk of rejecting a good quality lot may vary between –––––––––.
- 0.01 to 5%
- 0.01 to 10%
- 0.01 to 15%
- 0.01 to 20%
36. How does 'structure' reduce external uncertainty arising out of human behaviour
- Research and planning
- Forecasting
- both (A) and (B)
- none of the above
37. Inadequate production capacity ultimately leads to
- Poor quality
- Poor Customer Service
- Poor inventory control
38. What do you understand by the inspection conducted on all non reworkable jobs prior to their movement to the scrap yard?
- Final inspection
- Endurance inspection
- Functional inspection
- Salvage inspection
39. A/An ––––––––– history card is the record of all repairs, replacements and engineering changes carried out in the equipment during it's period of service.
40. Which of the following are assignable cause?
- Large variations in hardness of material
- Errors in setting
Search MBA MCQ.com
IMAGES
VIDEO
COMMENTS
Mcqs Clouds mcqsclouds.com Assignable causes are caused due to changes in _________ A. manufacturing process B. material C. inspection process D. all of the above Answer & Explanation Which equation is used to calculate thickness of an alloy steel cylinder with open ends? A. Clavarino's equation B. Birnie's equation C. Lame's equation D.
Assignable causes are caused due to changes in _____ 1.Manufacturing process, 2.Material, 3.Inspection process, 4.All of the above
Assignable cause variation can be attributed to a defect, fault, mistake, delay, breakdown, accident, and/or shortage in the process. Or it can be a result of some unique combination of factors coming together to actually improve the process. When assignable causes are present, your process is unpredictable.
Assignable causes are caused due to changes in _____ Enter the code shown above: (Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)
Assignable Causes - Consists of one or just a few individual causes-any one assignable causes can result in large process variation - Processes that are out of control are operating in the presence of assignable causes of variation.
Assignable causes are caused due to changes in _________ A. manufacturing process B. material C. inspection process D. all of the above Solution by Mcqs Clouds Answer: Option D Explanation: No explanation is available for this question! Which equation is used to calculate thickness of an alloy steel cylinder with open ends? A. Clavarino's equation
A process is said to be in statistical control when assignable causes are the only sources of variation False Mistakes stemming from workers' inadequate training represent an assignable cause of variation. True Averages of small samples, not individual measurements, are generally used in statistical process control. True
a) If assignable causes are present, the chances of difference between subgroups should be largest b) If assignable causes are present, the chances of difference between subgroups must be lowest c) If assignable causes are present, the chances of difference between the subgroups must be moderate
Statistics Lecture Notes, Online MCQs. Statistics. MCQs Statistics Test 1. MCQs Basic Statistics 2. Basic Statistics 12; Skewness & Kurtosis 11; Basic Statistics 10; Basic Statistics 9; ... Uncovering whether the variability in the product due to assignable causes or not All of the above. 11.
Which of these conditions don't describe an assignable cause in the process? a) A positive shift in the Cusum value b) A negative shift in the Cusum value c) Random change in Cusum value d) Continuous upward drift of Cusum value after a continuous downward drift in the Cusum value View Answer 12.
Related MCQs? Which of the following is (are) important consideration(s) concerning activity times? ? Objective of Work Study is to improve ----- ? The following is not a major contributor in the development of Control Charts and Sampling plan ? Organizational models are ?
Where we put these limits will determine the risk of undertaking such a search when in reality there is no assignable cause for variation. Since two out of a thousand is a very small risk, the 0.001 limits may be said to give practical assurances that, if a point falls outside these limits, the variation was caused be an assignable cause.
Some of the important factors of assignable causes of variation are - i) Substandard or defective raw materials ii) New techniques or operation iii) Negligence of the operators iv) Wrong or improper handling of machines v) Faulty equipment vi) Unskilled or inexperienced technical staff and so on.
Production and Operations Management. 31. The term --------- implies the foregone profit due to inability of company to produce. 32. OC curve of ideal sampling plan suggests that all lots less than 3% defectives have the probability of acceptance of ---------. 33.