Flow charting symbols CHECK SHEETS Check sheets explore what and where an event of interest is...
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![Page 1: Flow charting symbols CHECK SHEETS Check sheets explore what and where an event of interest is occurring. Attribute Check Sheet Order Types 7am-9am 9am-11am.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d3f5503460f94a184ee/html5/thumbnails/1.jpg)
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Flow charting symbols
Start
Process
Decision
End
Yes
No Wait
Process
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CHECK SHEETSCheck sheets explore what and where
an event of interest is occurring.Attribute Check Sheet
Order Types 7am-9am 9am-11am 11am-1pm 1pm-3pm 3pm-5-pm
Emergency
Nonemergency
Rework
Safety Stock
Prototype Order
Other
27 15 19 20 28
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PARETO ANALYSISA method for identifying and separating
the vital few from the trivial many.
%
Factor
AB
CD
E F G IH J
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CAUSE & EFFECT DIAGRAMS
Pins notAssigned
DefectivePins
ReceivedDefective
Damagedin storage
Maintenance
Equipment Employees
Proceduresand Methods
TrainingSpeed
Condition
ClassificationError
Inspection CPU Chip
BADCPU
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HISTOGRAMSA statistical tool used to show the extent and typeof variance within the system.
No. of Occurrences
Outcome
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SCATTERPLOTS
Variable A
Variable B
x x x x x x xx x x x x xx x x x x x xx x xx x x x x xx x x x x x xx x x x xx xxx x x x x xx xx x x x x xx x x x xxx xx x x x x xxx x x xx x x xx xx x x x x x xx x x xxx xx xx xxx x x xx xxx x x x x x x xx x x x x x x xx x x xx x x xx x x x
Clearly largervalues of variable Aseemingly are associated with largervalues of variable B.
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CONTROL
CHARTS• The purpose of control charts is to tell the operator when
the process is producing output in accordance with the assumed process variation.
• The null hypothesis is that a process is making parts with a given mean and standard deviation.
• If the null hypothesis is true, then a small sample of the expected value of the system’s output will have a sample mean equal to the process mean and a sample variance equal to the sums of the sample size time the process variance.
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Control Chart
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
UCL
LCL
Sample number
Mean
Out ofcontrol
Normal variationdue to chance
Abnormal variationdue to assignable sources
Abnormal variationdue to assignable sources
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Types of control charts