OM 300 Exam 2 Northam Questions with 100%
Correct Answers
The objective of a process control system Correct
Answer: provide a statistical signal when assignable
causes of variation are present.
Statistical Process Control (SPC) Correct Answer: the
application of statistical techniques to determine
whether a process is delivering what the customer wants
Variability Correct Answer: -Natural or common causes
-Special or assignable causes
Statistical Process Control (SPC)
facts Correct Answer: •Provides a statistical signal when
assignable causes are present
•Quickens appropriate actions to eliminate assignable
causes
,Natural Variations Correct Answer: •variability that
affects every production process to some degree and is
to be expected; also known as common cause
•If the distribution of outputs falls within acceptable
limits, the process is said to be "in control"
Assignable Variations Correct Answer: variation in a
production process that can be traced to specific
causes
-Generally this is some change in the process
Assignable Variations Objective Correct Answer: •The
objective is to discover when assignable causes are
present
-Eliminate the bad causes
-Incorporate the good causes
,Samples Correct Answer: Group of products from which
statistics are taken
Distribution Correct Answer: Spread of the data
Differences in Distribution Correct Answer: -central
tendency (mean),
-standard deviation or variance, and
-shape
If only natural causes of variation are present... Correct
Answer: the output of a process forms a distribution that
is stable over time and is predictable
If assignable causes are present... Correct Answer: the
process output is not stable over time and is not
predicable
Control Charts Correct Answer: graphic presentations of
process data over time, with predetermined control
limits
, the purpose of control charts is to help distinguish
between natural variations and variations due to
assignable causes
Central Limit Theorem Correct Answer: The mean of the
sampling distribution will be the same as the population
mean
Sampling Distribution Correct Answer: the distribution of
values taken by the statistic in all possible samples of the
same size from the same population
Quality data: Attribute Data Correct Answer: Product
characteristic evaluated with a discrete choice
Good/bad, yes/no
Quality data: Variable Data Correct Answer: Product
characteristic that can be measured
Length, size, weight, height, time, velocity
Correct Answers
The objective of a process control system Correct
Answer: provide a statistical signal when assignable
causes of variation are present.
Statistical Process Control (SPC) Correct Answer: the
application of statistical techniques to determine
whether a process is delivering what the customer wants
Variability Correct Answer: -Natural or common causes
-Special or assignable causes
Statistical Process Control (SPC)
facts Correct Answer: •Provides a statistical signal when
assignable causes are present
•Quickens appropriate actions to eliminate assignable
causes
,Natural Variations Correct Answer: •variability that
affects every production process to some degree and is
to be expected; also known as common cause
•If the distribution of outputs falls within acceptable
limits, the process is said to be "in control"
Assignable Variations Correct Answer: variation in a
production process that can be traced to specific
causes
-Generally this is some change in the process
Assignable Variations Objective Correct Answer: •The
objective is to discover when assignable causes are
present
-Eliminate the bad causes
-Incorporate the good causes
,Samples Correct Answer: Group of products from which
statistics are taken
Distribution Correct Answer: Spread of the data
Differences in Distribution Correct Answer: -central
tendency (mean),
-standard deviation or variance, and
-shape
If only natural causes of variation are present... Correct
Answer: the output of a process forms a distribution that
is stable over time and is predictable
If assignable causes are present... Correct Answer: the
process output is not stable over time and is not
predicable
Control Charts Correct Answer: graphic presentations of
process data over time, with predetermined control
limits
, the purpose of control charts is to help distinguish
between natural variations and variations due to
assignable causes
Central Limit Theorem Correct Answer: The mean of the
sampling distribution will be the same as the population
mean
Sampling Distribution Correct Answer: the distribution of
values taken by the statistic in all possible samples of the
same size from the same population
Quality data: Attribute Data Correct Answer: Product
characteristic evaluated with a discrete choice
Good/bad, yes/no
Quality data: Variable Data Correct Answer: Product
characteristic that can be measured
Length, size, weight, height, time, velocity
