INEN 4301 EXAM 2 QUESTIONS AND ANSWERS
Assignable cause variation is synonymous with __________. - CORRECT ANSWER✅✅special cause
variation
This type of variation is inherent to the process and is an expected type of variation. - CORRECT
ANSWER✅✅common cause variation
Equipment, materials, environment, and operator account for special cause variation and common
cause variation. - CORRECT ANSWER✅✅True
Because variation occurs in raw material, it must also occur in the finished product. - CORRECT
ANSWER✅✅True
An out-of-control condition could be due to a chance cause, and this fact can occur 27 times out of
10,000. What is the average run length before a chance cause occurs? - CORRECT ANSWER✅✅NOT 27
or 270!!
_____Is a category of variation in piece part production. - CORRECT ANSWER✅✅all of the above
-Within peace variation
-piece to piece variation
-time to time variation
When driving to school you and counter a wreck which stops the traffic. This stoppage delays your
arrival to school by 20 minutes. This is an example of what type of variation. - CORRECT
ANSWER✅✅special cause variation
Variable control charts provide information for______. (Choose all that apply) - CORRECT ANSWER✅✅-
Quality improvement
-determination of the process capability
-decisions in regard to product specifications
-current decisions in regard to the production process
, -current decisions in regard to recently produced items
This type of variation is illustrated by the surface of roughness of a piece, wherein one portion of the
surface is rougher than another portion, or the printing on one end of the page is better than on the
other end. - CORRECT ANSWER✅✅Within peace variation
This type of variation occurs among pieces produced at the same time. Thus, the light intensity of four
consecutive light bulbs produced from the same machine will be different. - CORRECT
ANSWER✅✅piece to piece variation
This type of variation is illustrated by the difference in a product or service produced at different times
of the day the us, a service given early in the morning will be different from one given later in the day or
as a cutting tool wears, the cutting characteristics will change. - CORRECT ANSWER✅✅time to time
variation
A natural variation is the result of assignable causes. It usually, but not always, requires corrective action
by people close to the process, such as operators, technicians, clerks, maintenance workers and first-line
supervisors. - CORRECT ANSWER✅✅False
For the purpose of control charting samples must be taken in a random manner. - CORRECT
ANSWER✅✅False
Natural variation is the result of chance causes. It requires management intervention to achieve quality
improvement. - CORRECT ANSWER✅✅True
The variable that is chosen for an x barchart must be a qualitative characteristic. - CORRECT
ANSWER✅✅False
_____ is (are) used to evaluate the variation in quality from subgroup to subgroup - CORRECT
ANSWER✅✅control limits
Equipment, materials, environment, and operator account for special cause variation and common
cause variation - CORRECT ANSWER✅✅True
Assignable cause variation is synonymous with __________. - CORRECT ANSWER✅✅special cause
variation
This type of variation is inherent to the process and is an expected type of variation. - CORRECT
ANSWER✅✅common cause variation
Equipment, materials, environment, and operator account for special cause variation and common
cause variation. - CORRECT ANSWER✅✅True
Because variation occurs in raw material, it must also occur in the finished product. - CORRECT
ANSWER✅✅True
An out-of-control condition could be due to a chance cause, and this fact can occur 27 times out of
10,000. What is the average run length before a chance cause occurs? - CORRECT ANSWER✅✅NOT 27
or 270!!
_____Is a category of variation in piece part production. - CORRECT ANSWER✅✅all of the above
-Within peace variation
-piece to piece variation
-time to time variation
When driving to school you and counter a wreck which stops the traffic. This stoppage delays your
arrival to school by 20 minutes. This is an example of what type of variation. - CORRECT
ANSWER✅✅special cause variation
Variable control charts provide information for______. (Choose all that apply) - CORRECT ANSWER✅✅-
Quality improvement
-determination of the process capability
-decisions in regard to product specifications
-current decisions in regard to the production process
, -current decisions in regard to recently produced items
This type of variation is illustrated by the surface of roughness of a piece, wherein one portion of the
surface is rougher than another portion, or the printing on one end of the page is better than on the
other end. - CORRECT ANSWER✅✅Within peace variation
This type of variation occurs among pieces produced at the same time. Thus, the light intensity of four
consecutive light bulbs produced from the same machine will be different. - CORRECT
ANSWER✅✅piece to piece variation
This type of variation is illustrated by the difference in a product or service produced at different times
of the day the us, a service given early in the morning will be different from one given later in the day or
as a cutting tool wears, the cutting characteristics will change. - CORRECT ANSWER✅✅time to time
variation
A natural variation is the result of assignable causes. It usually, but not always, requires corrective action
by people close to the process, such as operators, technicians, clerks, maintenance workers and first-line
supervisors. - CORRECT ANSWER✅✅False
For the purpose of control charting samples must be taken in a random manner. - CORRECT
ANSWER✅✅False
Natural variation is the result of chance causes. It requires management intervention to achieve quality
improvement. - CORRECT ANSWER✅✅True
The variable that is chosen for an x barchart must be a qualitative characteristic. - CORRECT
ANSWER✅✅False
_____ is (are) used to evaluate the variation in quality from subgroup to subgroup - CORRECT
ANSWER✅✅control limits
Equipment, materials, environment, and operator account for special cause variation and common
cause variation - CORRECT ANSWER✅✅True
