AV equals Zero in Minitab - MSA with 2 Appraisers

[Crombes]

Hello

I have done a MSA (nested) in Minitab with 2 apprasiers and I have seen that my AV is zero , this seems rather strange ( as there is difference between the appraisers) can anyone help ?

Thanks

[Kales Veggie]

Can you share the data with use?

[antoine.dias]

Sometimes the calculation has a negative result.

Then it is set at 0 ( default setting )

Best regards,

Antoine

[Crombes]

Originally Posted by Kales Veggie

Can you share the data with use?

operator sample in coil deel sample resultaat (N)
Filip 1 8 89.95
Filip 1 6 85.81
Filip 1 1 83.73
Filip 1 2 88.29
Daan 1 5 86.64
Daan 1 4 84.15
Daan 1 7 81.66
Daan 1 3 90.78
Filip 2 3 102.80
Filip 2 5 91.20
Filip 2 6 113.99
Filip 2 1 99.90
Daan 2 2 92.03
Daan 2 4 87.05
Daan 2 8 92.85
Daan 2 7 88.29
Filip 3 3 89.54
Filip 3 2 102.39
Filip 3 4 92.85
Filip 3 1 91.61
Daan 3 5 90.78
Daan 3 7 87.88
Daan 3 6 91.61
Daan 3 8 90.37
Filip 4 7 99.49
Filip 4 1 95.75
Filip 4 4 88.29
Filip 4 2 95.75
Daan 4 3 94.10
Daan 4 5 91.61
Daan 4 6 89.54
Daan 4 7 94.51
Filip 5 2 85.39
Filip 5 7 69.64
Filip 5 3 73.79
Filip 5 1 50.99
Daan 5 4 78.35
Daan 5 5 84.98
Daan 5 6 78.35
Daan 5 8 85.81

[Dave Strouse]

Crombes,

Could you explain a bit more and attach the MINITAB file.

How is the design nested? What are the samples in coil and deel sample meanings. Which did you choose to analyze?

BTW, there is no AV in MINITAB? Do you mean reproducibility?

[Crombes]

Originally Posted by Dave Strouse

Crombes,

Could you explain a bit more and attach the MINITAB file.

How is the design nested? What are the samples in coil and deel sample meanings. Which did you choose to analyze?

BTW, there is no AV in MINITAB? Do you mean reproducibility?

Hi we have done an destructive test on the plastic adhesion of plastified wire
we have cut the wire in 5 pieces and than these 5 pieces in 8 pieces
each operator (2 operators) have then measured 4 of the 8 pieces
(plastic adhesion ) I hope this explains a bit more the test
yes I mean reproducibility

[Miner]

Originally Posted by Crombes

Hi we have done an destructive test on the plastic adhesion of plastified wire
we have cut the wire in 5 pieces and than these 5 pieces in 8 pieces
each operator (2 operators) have then measured 4 of the 8 pieces
(plastic adhesion ) I hope this explains a bit more the test
yes I mean reproducibility

I am at home right now and do not have access to Minitab, so I cannot open your file. A destructive MSA is considered a Nested MSA in Minitab. Did you analyze the data using Minitab's nested MSA routine?

[Crombes]

Originally Posted by Miner

I am at home right now and do not have access to Minitab, so I cannot open your file. A destructive MSA is considered a Nested MSA in Minitab. Did you analyze the data using Minitab's nested MSA routine?

Hi Miner

yes i used the nested msa routine

thanks for the help