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Essentials Of Operations Managment > Chapter 10 > Flashcards

Chapter 10 Flashcards

1
Q

What is a type 2 Error?

A

Wrongly concluding that a process is in contorl when it actually isn’t

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2
Q

Once there is only random variation in the output of the process, the process is considered___________?

A

Stable

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3
Q

Variability of process output that is measuered in standard deviation

A

Process width

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4
Q

Limits of range of acceptable variation in output

A

Specific width

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5
Q

Who said there is cost to any deviation from target specifications?

A

Genichi Taguchi

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6
Q

How to improve process capability? (5)

A
  1. Simplify
  2. Standardize
  3. Mistake proof
  4. Upgrade
  5. Automate
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7
Q

Process capability 3 improvements…

A
  1. Reduce the need for quality control
  2. Lower cost of quality failures
  3. Improve customer services
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8
Q

Systematic improvement through documentation measure and analysis is….

A

BPI Business process improvement

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9
Q

3 BPI steps…

A

Map process
Analyze process
Redesign Process

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10
Q

What is PDSA

A

Plan Do Study Act

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11
Q

PDSA, what happens with in the plan phase?

A

Study, document, collect data, analyze, plan, specific measures

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12
Q

PDSA what happens in the DO phase?

A

Begin the plan and make any needed changes

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13
Q

PDSA what happens within the study phase?

A

Evaluate plan and make any more changes

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14
Q

PDSA what happens in the ACT phase?

A

Standardize and communicate the results

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15
Q

What is DMAIC

A

Define, Measure, Analyze, Improve, Control

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16
Q

Types of Quality control- Accepted Sampling?

A

Contorl efforts are limited to before and after the production

17
Q

Types of Quality Control- What is process control?

A

Expand efforts to include the entire production and delivery process

18
Q

Types of Quality Control- what is continuous improvement?

A

Quality control is integrated into the production

19
Q

Activity that compares process output to a standard to achieve quality of conformance?

A

Quality control inspection

20
Q

What are the four questions of the inspection process?

A
  1. Where
  2. How much/ often
  3. On site?
  4. Inspect attributes or variables
21
Q

What are the three areas where you can do inspections?

A

End of process
Start of process
During process

22
Q

Level of inspection activity at which the costs are at its lowest?

A

Optimal level

23
Q

When should you use centralized inspection?

A

When the inspection process requires costly or specialized equipment and persons

24
Q

When should you use on site inspections?

A

Typically when the inspection needs to be quick

25
Q

Inspection techniques that monitor and control process variation and statistical sampling, on a computer?

A

SPC Statistical Process Control

26
Q

Type of process variation where the cause can not be identified

A

Random Variation

27
Q

Type of process variation where cause can be identified

A

Non Random Variation

28
Q

Theoretical basis for distinguishing between types of variation?

A

Sampling distribution

29
Q

Most commonly used distribution, aka bell curve?

A

Normal distribution

30
Q

States that sampling distribution will approach a normal distribution patter as number of samples taken increase?

A

Central Limit Theory

31
Q

Statistical Process Tools- uses control limits and time ordered series of sample statistics to determine variation form process mean is random or non random?

A

Control chart

32
Q

What are the 2 SPC Control Charts for Variables?

A

Mean Control Charts- monitor and control central tendency

Range Control Charts- used to monitor and control dispersion of outputs

33
Q

Chart that monitors PPProportion of defective times in the output?

A

P CHARTs

34
Q

Type of Chart that monitors number of defects of outputs

A

C Charts

35
Q

What is a type I Error?

A

Wrongly concluding that a process is NOT in control when it actually is

Essentials Of Operations Managment (4 decks)

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