Chapter 19

Question 1

A collection of strategies, techniques, and actions taken by an organization to ensure it is producing a quality product of providing quality service.

Answer 1

Statistical Process Control (SPC)

Question 2

Program named after 3 points +/- the standard deviation that aims to reduce cost of defects and errors and improve process and customer satisfaction

Answer 2

Six Sigma

Question 3

What steps does six sigma take to achieve it’s goal

Answer 3

1. Identify and define problem
2. Collect and analyze data
3. make a process improvements
4. Implement procedure

Question 4

Variation that is random in nature. Cannot be completely eliminated

Answer 4

Chance variation

Question 5

Variation that is not random, can be eliminated or reduced

Answer 5

assignable variation

Question 6

Two reasons we should be concerned with variation

Answer 6

1. It will change the shape, dispersion, and central location of teh distribution of the product characteristic being measured
2. Assignable variation is usually correctable.

Question 7

Techniques associated with Six Sigma

Answer 7

1. Histograms
2. ANOVA
3. Chi-squared
4. regression
5. correlation

Question 8

A Diagnostic technique for tallying the number and type of defects that happen within a product or service.

Answer 8

Pareto analysis

Question 9

What are the steps to develope a pareto chart

Answer 9

1. Tally the defects
2. Rank defects in terms of frequency
3. produce a bar chart corresponding to frequency

Question 10

A cause and effect chart that illustrates the relationship between an effect and possible causes

Answer 10

Fishbone diagram

Question 11

Charts that show when assignable variation or changes have entered the process.

Answer 11

Control Charts

Question 12

A control chart that portrays measurements

Answer 12

Variable control chart

Question 13

A control chart that marks a product or service acceptable or unacceptable

Answer 13

An attribute control chart

Question 14

What is the minimum number of samples for a control chart

Answer 14

25

Question 15

A chart that shows and monitors the variation in sample ranges

Answer 15

Range chart

Question 16

When the mean chart and range chart are clustered near the center line withing the UCL and LCL it is said to be

Answer 16

in control

Question 17

The appropriate control chart if the item recorded is the proportion of unacceptable parts made in larger batch of parts

Answer 17

p-chart

Question 18

a chart that plots the number of defects of failures per unit and is based on the poisson

Answer 18

c-bar

Question 19

A sampling plan where a sample of n units is randomly selected from the lots of N units

Answer 19

Acceptance testing

Question 20

Four possibilities of acceptance testing

Answer 20

1. Good lot
2. bad lot
3. consumer’s risk
4. Producers risk

Question 21

When a lot contains more defective units then it should but is accepted

Answer 21

consumers risk

Question 22

When a lot contains an acceptable amount of defects but is rejected

Answer 22

Producers risk

Question 23

Reports the percent defective along teh horizontal axis and the probability of accepting that percent defective

Answer 23

operating characteristic curve or OC curve