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7/27/2019 m - 34106 Cohen Kappa
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The following spreadsheet is used to calculate an Attribute GR&R Effectiveness, in which up to 100 samples
can be evaluated, using 2 or 3 operators.
NOTES:
Attribute Gage R & R Effectiveness
To see a Demo of the Attribute GR&R Effectiveness spreadsheet, click on the Demo icon. Move around the
spread sheet to see the data. When you are finished, click the Delete Data icon to delete all data to begin
entering your own data.
The 95% UCL and 95% LCL represent the 95% upper and lower confidence limits on the
binomial distribution. The Calculated Score is the basic computation reported on the report
page for % Appraiser and % Score vs Attribute. The 95% confidence interval represents the
range within which the true Calculated Score lies given the uncertainty associated with
limited sample sizes. As sample size increases (in this case, Total Inspected) the confidence
interval will get smaller and smaller which indicates more reliable estimates of the true
percentages. In the case of the Demo data, the true Calculated score for Operator 1 could be
as low as 76.8% given that only 14 samples inspected, even though there was a 100%
Appraiser value calculated. Also, even though Operator 2 had a lower score, Operators 1 and
3 cannot be distinguished from Operator 2 because the calculated score of #2 (78.6%) lies
within the confidence limits for Operators 1 and 3.
With a worksheet limitation of 100 samples, the best the lower 95% limit can be is 96.4%.
Thus, we would have to say that the best an inspector could be is 96% efficient; even though
they did not make any mistakes.
If you or an expert has selected samples to be evaluated and you know what attributes these samples are (Good
vs Bad), enter this information in the STANDARD column. This will enable you to determine how well each
operator can evaluate a set of samples against a known standard. You do not need to enter information in this
column for the spreadsheet to work, although you will not be able to assess the operators against known
standards.
You do not have to specify how many operators or the # of samples that you will be evaluating during the test.
Simply enter the data into the spreadsheet under the specific operator. Remember the attributes must be spelled
properly or the spreadsheet will not analyze the data correctly.
To print a copy of the report click on the Print Report icon.
To delete the data in the spreadsheet, click on the Delete Data icon.
Instructions:
In the Data Entry worksheet, fill in the appropriate information in the Scoring Report section and enter the type
of Attributes you are evaluating in the Attribute Legend section. THE INFORMATION MUST BE
ENTERED INTO THE ATTRIBUTE LEGEND SECTION OR THE SPREADSHEET WILL NOT
WORK. The attributes can be either alpha or numeric, e.g. Yes, No; pass, fail; go, stop; or 1, 2. You must be
consistent throughout the form and spell properly.
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Try different combinations of number of samples and number of matches to see the effects of
sample size. EXAMPLE: a sample size of 30 with one non-match will yield a 17%
confidence interval. In order to get reasonable reliability in estimates of efficiency, large
sample sizes will be required.
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DIA:
CALIBRE:
1 PASS PRODUCTO:
2 FAIL PROCESO:
Opcional: Introducir el nombre del Inspector o dejar la opción predeterminada
SI/NO SI/NO
Muestra Patrón Intento 1 Intento 2 Intento 3 Intento 1 Intento 2 Intento 3 Intento 1 Intento 2 Intento 3 Acuerdo Acuerdo
1 1 1 1 1 1 1 1 1 1 1 SI SI
2 0 0 0 0 0 0 0 0 0 0 SI SI
3 1 1 1 1 1 1 1 1 1 1 SI SI
4 0 0 0 0 0 0 0 0 0 0 SI SI
5 0 0 0 0 0 0 0 0 0 0 SI SI
6 0 0 0 0 0 0 0 0 0 0 SI SI
7 1 1 1 1 1 1 1 1 1 1 SI SI
8 1 1 1 1 1 1 1 1 1 1 SI SI9 1 1 1 1 1 1 1 1 1 1 SI SI
10 1 1 1 1 1 1 1 1 1 1 SI SI
11 1 1 1 1 1 1 1 1 1 1 SI SI
12 1 1 1 1 1 0 1 0 1 1 NO NO
13 0 0 0 0 0 0 1 0 0 0 NO NO
14 0 0 0 0 0 0 0 0 0 1 NO NO
15 1 1 1 1 1 1 1 1 1 1 SI SI
16 1 1 1 1 1 1 1 1 1 1 SI SI
17 1 1 1 1 1 1 1 1 1 1 SI SI
18 0 0 0 0 0 0 0 0 0 0 SI SI
19 1 1 1 1 1 1 1 1 1 1 SI SI
20 1 1 1 1 1 1 1 1 1 1 SI SI
21 1 1 1 1 1 1 1 1 1 1 SI SI
22 0 0 0 0 0 0 0 0 0 0 SI SI
23 0 0 0 0 0 0 0 0 0 0 SI SI
24 0 0 0 0 0 0 0 0 0 0 SI SI
25 0 0 0 0 0 0 0 0 0 0 SI SI
26 1 1 1 1 1 1 1 1 1 1 SI SI
27 1 1 1 1 1 1 1 1 1 1 SI SI
28 1 1 1 1 1 1 1 1 1 1 SI SI
29 0 0 0 0 0 0 0 0 0 0 SI SI
30 1 1 1 1 1 1 1 1 1 1 SI SI
31 1 1 1 1 1 1 1 1 1 1 SI SI
32 1 1 1 1 1 1 1 1 1 1 SI SI
33 0 0 0 0 0 0 0 0 0 0 SI SI
34 0 0 0 0 0 0 0 0 0 0 SI SI
35 0 0 0 0 0 0 0 0 0 0 SI SI
36 0 0 0 0 0 0 0 0 0 0 SI SI
37 1 1 1 1 1 1 1 1 1 1 SI SI
38 1 1 1 1 1 1 1 1 1 1 SI SI
39 1 1 1 1 1 1 1 1 1 1 SI SI
40 0 0 0 0 0 0 0 0 0 0 SI SI
41 1 1 1 1 1 1 1 1 1 1 SI SI
C. AYMIMIR
(Introducir los valores) M-34106
INFORME DE RECUENTOS
16371
D. MARTIN
Definición de los Atributos
F. REBOLLAR
Muestra Conocida
0 COQUILLAS
ENTRADA DE DATOS - ESTUDIO DE VARIACION DE CALIBRES POR ATRIBUTOS
T
o d o s l o s I n s p e c t o r e s
c
o i n c i d e n e n s i m i s m o s y
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n t r e e l l o s
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o d o s l o s i n s p e c t o r e s
c
o i n c i d e n c o n e l p a t r ó n
05-Aug-2013
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42 1 1 1 1 1 1 1 1 1 1 SI SI
43 1 1 1 1 1 1 1 1 1 1 SI SI
44 1 1 1 1 1 1 1 1 1 1 SI SI
45 1 1 1 1 1 1 1 1 1 1 SI SI
46 1 1 1 1 1 1 1 1 1 1 SI SI
47 1 1 1 1 1 1 1 1 1 1 SI SI
48 1 1 1 1 1 1 1 1 1 1 SI SI
49 1 1 1 1 1 1 1 1 1 1 SI SI
50 1 1 1 1 1 1 1 1 1 1 SI SI
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99
100
100.00% 96.00% 96.00%
100.00% 96.00% 96.00%
(1) Inspector Acepta en todos sus resultados
(2) Inspector Acepta en todos sus resultados con el Patrón Conocido
(3) Todos los Inspectores concuerdan en sus resultados y en los del resto
(4) Todos los Inspectores concuerdan en sus resultados y en los del resto y además concuerdan con los del patró
(5) Introducir Bueno/Malo, OK/NOK, ACEPTADO/RECHAZADO o el criterio elegido que indique el estado de inspección
Observaciones:
% INSPECTOR FRENTE PATRON(2)
->
Sistema % Eficacia del resultado(3)
->
Sistema % Eficacia del Resultado vs Pa
% Puntuación del Inspector (1)
->
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FECHA CALIBRE
PRODUCTO PROCESO:
Fuente D. MARTIN
F.
REBOLLAR C. AYMIMIR D. MARTIN
F.
REBOLLAR C. AYMIMIR
Total Inspeccionado 50 50 50 50 50 50
Correspondencias 50 48 48 50 48 48
95% LCS 100.0% 99.5% 99.5% 100.0% 99.5% 99.5%
Resultado Calculado 100.0% 96.0% 96.0% 100.0% 96.0% 96.0%
95% LCI 94.2% 86.3% 86.3% 94.2% 86.3% 86.3%
0 0 0
0 0 0
0 2 2
Total Inspeccionado 50 50
Conforme 47 47
95% LCS 98.7% 98.7%
Resultado Calculado 94.0% 94.0%
95% LCI 83.5% 83.5%
Notas
1) Inspector Acepta en todos sus resultados
2) Inspector Acepta en todos sus resultados con el Patrón Conocido
3) Todos los Inspectores concuerdan en sus resultados y en los del resto
M-34106
1637 COQUILLAS
% INSPECTOR1
INFORME ESTADISTICO - ESTUDIO DE VARIACION DE CALIBRES
POR ATRIBUTOS
Dudosos (Inspector Acepta y Rechaza la misma Pieza)
Sistema % Eficacia del
resultado3
5-Aug-2013
Falso Negativo (Inspector tiende hacia el rechazo) Std = Pass
% INSPECTOR FRENTE PATRON2
4) Todos los Inspectores concuerdan en sus resultados y en los del resto y además concuerdan con los del patrón
Sistema % Eficacia del Resultado vs
Patrón4
Falso Positivo (Inspector tiende hacia la aceptación) Std = Fail
0.0%
10.0%
20.0%
30.0%
40.0%
50.0%
60.0%
70.0%
80.0%
90.0%
100.0%
1 2 3
%
E f i c i e n c i a
% INSPECTOR
95% LCS Resultado Calculado 95% LCI
0.0%
10.0%
20.0%
30.0%
40.0%
50.0%
60.0%
70.0%
80.0%
90.0%
100.0%
1 2 3
%
E f i c i e n c i a
% INSPECTOR FRENTE PATRON
95% LCS Resultado Calculado 95% LCI
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INFORME ESTADISTICO - ESTUDIO DE VARIACION DE CALIBRES
POR ATRIBUTOS
Eficacia
Ratio de
Fallos
Ratio Falsas
Alarmas
≥ 90% ≤ 2% ≤ 5%
≥ 80 % ≤ 5% ≤ 10 %
< 80 % > 5 % > 10%
Eficacia Fallos Fal Alar
100.00 0.00 0.00
96.00 1.96 1.01
96.00 1.96 1.01
OBSERVACIONES
ANALIZADO POR Y FECHA: D. MARTIN 8/7/2013
Un Resultado en verde, el inspector es apto para realizar la medición
Inspector Conforme
Inspector medianamente
aceptable
Inspector Inaceptable
INSPECTOR A en %
CONCLUSIONES DE LOS RESULTADOS DE
LA VARIACION
Criterio de Aceptación
Un Resultado en Rojo el Inspector es inaceptable para el método, tomar correcciones
INSPECTOR B en %
INSPECTOR C en %
Un Resultado en amarillo el Inspector es medianamente aceptable, debería mejorarse