Logic behind signal detection in attribute GRR% calculation

S

S. Udhayha Kumar

#1
Signal Detection Method: Ref Page 134. How did they arrive the values as dLSL & dUSL. Instead of the values 0.470832 – 0.446697, why not it be “ 0.446697 – 0.409238”? What is the logic behind this theory? Please enlighten me
 
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martin elliott

#3
S. Udhayha Kumar said:
Signal Detection Method: Ref Page 134. How did they arrive the values as dLSL & dUSL. Instead of the values 0.470832 – 0.446697, why not it be “ 0.446697 – 0.409238”? What is the logic behind this theory? Please enlighten me
The actual theory on the number crunching I'll have leave to others but, in its most simple terms, apologies in advance, the 0.470832 to 0.446697 represent the area where the descisions taken cannot be said to be reliable - right or wrong.

As such these zones represent the error potential of the measurement system which is in reality is what you are looking for in the MSA
 
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