Statistical Analysis 10-08-06

8/3/2019 Statistical Analysis 10-08-06

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This workbook will check a process statistically and with specified limits.

The Set-Up sheet is used to:

Select the desired statistical parameters from the drop down boxes.Insert the appropriate chart and column headings.

Enter the known specified limits.

The Report sheet is used to:

Document all aspects of the test.

The Data sheet is used to:

Enter up to fifty samples of collected measurements for each of the five columns.

The appropriate "K" factor will be located and used in the statistical calculations.

The chart sheets:

Automatically generate charts from the entered data.If desired, you can manually scale the chart axis.

The Cp Cpk Cpm sheet:

This will be calculated when specified limits are entered on the Set-Up sheet.


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File Name: 85508483.xls Sheet Name: Set-Up P

Statistical Analysis Workbook Set-UpSelect Number

Of Standard Select One Select

Deviations or Two Sided % Confidence / % Population

Company Name:

From:

Date:

Test Title:

BLUE text can be altered and the change will be reflected on the appropriate chart or column.

Measurement 1 Measurement 2 Measurement 3 Measurement 4 Measurement 5

USL

Target

LSL

sired labels and headings for the ch

Heading for Chart 1 Heading for Chart 2

Chart 1 Y Chart 1 Chart 2 Y Chart 2

Chart 1 X Chart 2 X

Heading for Chart 3 Heading for Chart 4

Chart 3 Y Chart 3 Chart 4 Y Chart 4

Chart 3 X Chart 4 X

Heading for Chart 5 Comparison Chart Heading

Chart 5 Y Chart 5 Comparison Y Comparison Chart

Chart 5 X Comparison X


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Page 3 of 16

Statistical Analysis Report

To:

From:

Date:

Subject:

PURPOSE:

MATERIALS/EQUIPMENT:

TEST PARAMETERS:


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Page 4 of 16

PROCEDURE:

RESULTS:


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Page 5 of 16


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Page 6 of 16

CONCLUSION/DISCUSSION:


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Sample # Measurement 1 Measurement 2 Measurement 3 Measurement 4 Measurement 5 Comm

1

23

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

3132

33

34

35

36

37

38

38

40

41

42

43

44

45

46

47

48

49

50

COUNT

UCL

LCL

MEAN

MAX

MEDIAN

MIN

RANGE

STDEV UCL = Statistical UCV LCL = Statistical Lo

MODE STDEV = Stand


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File Name: 85508483.xls Sheet Name: Chart 1

A checked box above indicates the information that will be included on the chart.

Measurement 1

COUNT

UCL 1

LCL 1

MEAN 1

MEDIAN

MAXMIN

RANGE

STDEV

CV

MODE

+ 3 STDEV

- 3 STDEV

"K" Factor

0 5 10 15 20 25 30 35 40-25

-20

-15

-10

-5

0

Heading for Chart 1

Chart 1 X

Chart1Y

DATA 1 UCL 1 MEAN 1 LCL 1


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Measurement 2

COUNT

UCL 2

LCL 2

MEAN 2

MEDIAN

MAXMIN

RANGE

STDEV

CV

MODE

+ 3 STDEV

- 3 STDEV

"K" Factor

0 5 10 15 20 25 30 35 40-25

-20

-15

-10

-5

0

Heading for Chart 2

Chart 2 X

Chart2Y



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Measurement 3

COUNT

UCL 3

LCL 3

MEAN 3

MEDIAN

MAXMIN

RANGE

STDEV

CV

MODE

+ 3 STDEV

- 3 STDEV

"K" Factor

0 5 10 15 20 25 30 35 40-25

-20

-15

-10

-5

0

Heading for Chart 3

Chart 3 X

Chart3Y



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Measurement 4

COUNT

UCL 4

LCL 4

MEAN 4

MEDIAN

MAXMIN

RANGE

STDEV

CV

MODE

+ 3 STDEV

- 3 STDEV

"K" Factor

0 5 10 15 20 25 30 35 40-25

-20

-15

-10

-5

0

Heading for Chart 4

Chart 4 X

Chart4Y



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Measurement 5

COUNT

UCL 5

LCL 5

MEAN 5

MEDIAN

MAXMIN

RANGE

STDEV

CV

MODE

+ 3 STDEV

- 3 STDEV

"K" Factor

0 5 10 15 20 25 30 35 40-25

-20

-15

-10

-5

0

Heading for Chart 5

Chart 5 X

Chart5Y



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0 5 10 15 20 25 30 35 40 45 50

-25

-20

-15

-10

-5

0

Heading for Chart 3

Measurement 3 UCL 3 MEAN 3 LCL 3 USL 3 Target 3

Chart 3 X

Chart3

Y

-20

-15

-10

-5

0

Heading for Chart 5

Measurement 5

UCL 5

MEAN 5

LCL 5

USL 5

Target 5

LSL 5

Chart5Y

0 5 10 15 20 25 30 35 40 45

-25

-20

-15

-10

-5

0

Heading for Chart 1

Measurement 1

UCL 1

MEAN 1

LCL 1

USL 1

Target 1

LSL 1

Chart 1 X

Chart1Y

DATA UCL 3 MEAN LCL 3

DATA UCL 1 MEAN LCL 1


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File Name: 85508483.xls


COUNT

UCL

LCL

MEAN

MEDIAN

MAX

MIN

RANGE

STDEV

CV

MODE

+ 3 STDEV

- 3 STDEV

"K" Factor

0 5 10 15 20 25 30 35 40 45-25

-20

-15

-10

-5

0

Comparison Chart Heading Measurement 1UCL 1

MEAN 1

LCL 1

USL 1

Target 1

LSL 1

Measurement 2

UCL 2MEAN 2

LCL 2

USL 2

Target 2

LSL 2

Measurement 3

UCL 3

MEAN 3

LCL 3

USL 3

Target 3

LSL 3

Measurement 4

UCL 4

MEAN 4

LCL 4

USL 4

Target 4

LSL 4

Measurement 5

UCL 5

MEAN 5

LCL 5

USL 5

Target 5

LSL 5

Comparison X

ComparisonY

DATA 1

UCL 1

MEAN 1

LCL 1

DATA 2

UCL 2

MEAN 2

LCL 2

DATA 3

UCL 3

MEAN 3

LCL 3

DATA 4

UCL 4

MEAN 4

LCL 4

DATA 5

UCL 5

MEAN 5

LCL 5


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Sheet Name: Box Plot Chart Printed on: 02/22/2012 at 00:30:5


COUNT

UCL

LCLMEAN

MAX

75th Percentile

MEDIAN

25th Percentile

MIN

RANGE

STDEV

CV

MODE

+ 3 STDEV

- 3 STDEV

"K" Factor


-25

-20

-15

-10

-5

0

MEDIAN 75th Percentile


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Sheet Name: Cp Cpk Cpm Printed on: 02/22/2012 at 00:30:55

This sheet will display results when Specified Limits are entered on the Set-Up Sheet


Cp

The index simply makes a direct comparison of the process natural tolerance to the engineering requirements.

Assuming the process distribution is normal and the process average is exactly centered between the

engineering requirements, a CP index of 1 would give a "capable process."

However, to allow a bit of room for process drift, the generally accepted minimum value for CP is 1.33.

In general, the larger CP is, the better.

The CP index has two major shortcomings. First, it cant be used unless there are both upperand lower specifications.

Second, it does not account for process centering.

If the process average is not exactly centered relative to the engineering requirements,

the CP index will give misleading results.

Cpk

Since the smallest value represents the nearest specification, the value of CPK tells you if the process

is truly capable of meeting requirements.

A CPK of at least +1 is required, and +1.33 is preferred.

Note that CPK is closely related to CP, and that the difference between CPK and CP represents the potential

gain to be had from centering the process.

Cpm

A CPM of at least 1 is required, and 1.33 is preferred.

CPM is closely related to CP.

The difference represents the potential gain to be obtained by moving the process mean closer to the target.

Unlike CPK, the target need not be the center of the specification range.

Documents

Statistical Analysis 10-08-06