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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.
Page 2: 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.

Flow charting symbols

Start

Process

Decision

End

Yes

No Wait

Process

Page 3: 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.

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

Page 4: 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.

PARETO ANALYSISA method for identifying and separating

the vital few from the trivial many.

%

Factor

AB

CD

E F G IH J

Page 5: 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.

CAUSE & EFFECT DIAGRAMS

Pins notAssigned

DefectivePins

ReceivedDefective

Damagedin storage

Maintenance

Equipment Employees

Proceduresand Methods

TrainingSpeed

Condition

ClassificationError

Inspection CPU Chip

BADCPU

Page 6: 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.

HISTOGRAMSA statistical tool used to show the extent and typeof variance within the system.

No. of Occurrences

Outcome

Page 7: 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.

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.

Page 8: 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.

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.

Page 9: 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.

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

Page 10: 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.
Page 11: 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.

Types of control charts


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