B
Hi friends
I have joined the forum just today.
Wish you all a very bright & properous New year (2008)
I have been exposed to the field of SPC some time back.
I understand that the concept of Rational Subgroup and its use in estimation of variability due to chance causes is central in SPC
However the question which is bugging me is -
Within Rational Subgroup (RS) variation is assumed to capture the Common cause variation.
How to choose the RS in a particular situation which ensures that the assumption (that the RS realy captures the common Cause variation, nothing more and nothing less) is correct ?
I am unable to find a satisfactory answer to this question.
Please enlighten me on this point.
Thanks in Advance
Bapun
India
I have joined the forum just today.
Wish you all a very bright & properous New year (2008)
I have been exposed to the field of SPC some time back.
I understand that the concept of Rational Subgroup and its use in estimation of variability due to chance causes is central in SPC
However the question which is bugging me is -
Within Rational Subgroup (RS) variation is assumed to capture the Common cause variation.
How to choose the RS in a particular situation which ensures that the assumption (that the RS realy captures the common Cause variation, nothing more and nothing less) is correct ?
I am unable to find a satisfactory answer to this question.
Please enlighten me on this point.
Thanks in Advance
Bapun
India