COB 300 OPERATIONS UPDATED
COMPREHENSIVE EXAM QUESTIONS AND
ANSWERS SURE A+
✔✔Benchmarking - ✔✔The process of measuring performance against the best in the
same or another industry
✔✔Inspection - ✔✔An appraisal activity that compares goods or services to a standard
✔✔Quality Control - ✔✔A process that evaluates output relative to a standard and takes
corrective action when output doesn't meet standards
✔✔Quality of Conformance - ✔✔A product or service conforms to specifications.
✔✔Statistical Process Control (SPC) - ✔✔Statistical evaluation of the output of a
process
✔✔Random variation - ✔✔Natural variation in the output of a process, created by
countless minor factors
✔✔Assignable variation - ✔✔In process output, a variation whose cause can be
identified. A non-random variation
, ✔✔Sampling distribution - ✔✔A theoretical distribution of sample statistics
✔✔Central limit theorem - ✔✔The distribution of sample averages tends to be normal
regardless of the shape of the process distribution
✔✔Control Process Steps - ✔✔Define, Measure, Compare, Evaluate, Correct, Measure
results
✔✔Control limits - ✔✔The dividing lines between random and non-random deviations
from the mean of the distribution. Control limits are based on the sampling distribution
✔✔Type I error - ✔✔Concluding a process is not in control when it actually is
✔✔Type II error - ✔✔Concluding a process is in control when it is not.
✔✔Control chart - ✔✔A visual tool for monitoring forecast errors. I's a time-ordered plot
of sample statistics
✔✔Variables - ✔✔Generate data that are measured
✔✔Attributes - ✔✔Generate data that are counted
✔✔Range control chart (R-charts) - ✔✔Control chart used to monitor process
dispersion. Mean and range charts used together complement each other
✔✔p-chart - ✔✔Control chart for attributes, used to monitor the proportion of defective
items in a process
✔✔c-chart - ✔✔Control chart for attributes, used to monitor the number of defects per
unit
✔✔Run - ✔✔Sequence of observations with a certain characteristic
✔✔Mean control chart (" x bar" charts) - ✔✔Control chart used to monitor the central
tendency of a process
✔✔Run test - ✔✔A test for patterns in a sequence.
✔✔Specifications - ✔✔A range of acceptable values established by engineering design
or customerRequirements. Specifications are also called tolerances
✔✔Process variability - ✔✔Natural or inherent variability in a process.
COMPREHENSIVE EXAM QUESTIONS AND
ANSWERS SURE A+
✔✔Benchmarking - ✔✔The process of measuring performance against the best in the
same or another industry
✔✔Inspection - ✔✔An appraisal activity that compares goods or services to a standard
✔✔Quality Control - ✔✔A process that evaluates output relative to a standard and takes
corrective action when output doesn't meet standards
✔✔Quality of Conformance - ✔✔A product or service conforms to specifications.
✔✔Statistical Process Control (SPC) - ✔✔Statistical evaluation of the output of a
process
✔✔Random variation - ✔✔Natural variation in the output of a process, created by
countless minor factors
✔✔Assignable variation - ✔✔In process output, a variation whose cause can be
identified. A non-random variation
, ✔✔Sampling distribution - ✔✔A theoretical distribution of sample statistics
✔✔Central limit theorem - ✔✔The distribution of sample averages tends to be normal
regardless of the shape of the process distribution
✔✔Control Process Steps - ✔✔Define, Measure, Compare, Evaluate, Correct, Measure
results
✔✔Control limits - ✔✔The dividing lines between random and non-random deviations
from the mean of the distribution. Control limits are based on the sampling distribution
✔✔Type I error - ✔✔Concluding a process is not in control when it actually is
✔✔Type II error - ✔✔Concluding a process is in control when it is not.
✔✔Control chart - ✔✔A visual tool for monitoring forecast errors. I's a time-ordered plot
of sample statistics
✔✔Variables - ✔✔Generate data that are measured
✔✔Attributes - ✔✔Generate data that are counted
✔✔Range control chart (R-charts) - ✔✔Control chart used to monitor process
dispersion. Mean and range charts used together complement each other
✔✔p-chart - ✔✔Control chart for attributes, used to monitor the proportion of defective
items in a process
✔✔c-chart - ✔✔Control chart for attributes, used to monitor the number of defects per
unit
✔✔Run - ✔✔Sequence of observations with a certain characteristic
✔✔Mean control chart (" x bar" charts) - ✔✔Control chart used to monitor the central
tendency of a process
✔✔Run test - ✔✔A test for patterns in a sequence.
✔✔Specifications - ✔✔A range of acceptable values established by engineering design
or customerRequirements. Specifications are also called tolerances
✔✔Process variability - ✔✔Natural or inherent variability in a process.
