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patric wessels
Dear all,
I am not sure if this is the right forum for this subject, but here's the question:
We are trying to assist our operators in determining whether a measured point is an outlier or not. We want to use the Grubbs test for this purpose. The problem is that in case of a large sample we measure 120 points and the tables with the Z-values (for 99% probability) only goes up to 25 samples points.
I am not an expert in statistics but I am sure there is a reason for this.
Can anyone help me out and explain why there are no Z-values for N>25?
Thanks.
Best regards,
Patric Wessels
QA Engineer
I am not sure if this is the right forum for this subject, but here's the question:
We are trying to assist our operators in determining whether a measured point is an outlier or not. We want to use the Grubbs test for this purpose. The problem is that in case of a large sample we measure 120 points and the tables with the Z-values (for 99% probability) only goes up to 25 samples points.
I am not an expert in statistics but I am sure there is a reason for this.
Can anyone help me out and explain why there are no Z-values for N>25?
Thanks.
Best regards,
Patric Wessels
QA Engineer