SSGB Chapter 8

Question 1

Which of the following is an input to six sigma Control?

Answer 1

Cost/benefit of different solutions

Cost/Benefit of different solutions is an input to six sigma Control.

Question 2

All the following are tools for six sigma control phase EXCEPT

Answer 2

Lessons learned

Lessons learned is an output from six sigma control phase

Question 3

Which of the following is an output from a six sigma control phase?

Answer 3

Implemented solutions

Implemented solutions is an output from six sigma control phase

Question 4

A systematic methodology to develop a data collection strategy for the process is also called

Answer 4

Control plan

Created during the Control phase of a six sigma project, the control plan is a systematic methodology to develop a data collection strategy for the process.

Question 5

A control plan contains (select the best answer)

Answer 5

All of the above

A control plan contains information about product and process characteristics. It states the control methods to be used, data to be collected and steps to be taken if problems are detected.

Question 6

In a control plan, the header section:

Answer 6

states who created the control plan, contact person for questions, name of person who is taking the measurement etc.

Header or administrative section: states who created the control plan, contact person for questions, name of person who is taking the measurement etc.

Question 7

In a control plan, the control methods section:

Answer 7

describes the data that should be collected for the process

Control Methods section: describes the data that should be collected for the process (the data to be collected depends on CTQ variables, customer requirements etc. and is determined by the project team while creating a control plan). This includes information like measurement type, sample size, levels of verification and frequency. It also has information on desired behavior, and corrective action to be taken if the process goes out of control.

Question 8

In a control plan, the Process section:

Answer 8

describes the process and its characteristics which would be measured through the control chart

Process section : describes the process and its characteristics which would be measured through the control chart

Question 9

In SPC, Arithmetic average is also called:

Answer 9

Mean

The mean of a collection of numbers is their arithmetic average, computed by adding them up and dividing by their number

Question 10

In SPC, the voice of the customer helps to determine:

Answer 10

Specification Limits

Upper Specification Limit and Lower Specification Limit: The upper and lower specification limits are determined by taking the voice of the customer. A process would satisfy customer requirements if it falls within the specification limits

Question 11

In SPC, the process data helps determine:

Answer 11

Control limits

Upper Control Limit (UCL) and Lower Control Limit (LCL): These are defined by the six sigma expert and usually lie within the upper and lower specification limits. These are calculated from the process data and if all the process data stays within the control limits then it is very likely that the variation is inherent in the process i.e. common cause of variation. So, control limits provide boundaries for a process which is under control. If the process data lies outside the control limits, then it is a special cause of variation and indicates that the process is out of control

Question 12

In SPC, the process is out of control if:

Answer 12

There is process data that lies above the Upper control limit

A process is said to be out of control if there is process data that lies above the Upper control limit or below the lower control limit

Question 13

If there are seven consecutive data points either above the mean or below the mean, then the process is:

Answer 13

Out of control

Rule of seven: If there are seven consecutive data points either above the mean or below the mean, then this may be an indication of process shift i.e. the process mean may have shifted and hence the process is out of control.

Question 14

A methodology used to accelerate the velocity and reduce the cost of any process by removing waste is also called:

Answer 14

Lean

Lean is a methodology used to accelerate the velocity and reduce the cost of any process by removing waste

Question 15

Amount of time taken between the entry of work into the process to the time the work exits the process is also called:

Answer 15

Lead time

Lead time is the amount of time taken between the entry of work into the process to the time the work exits the process.