One-Sided Run Rules control charts for Coefficient of Variation with Measurement Errors

We investigate in this paper the effect of measurement
errors on the performance of Run Rules control charts monitoring
the coefficient of variation (CV) squared. The previous
Run Rules - CV in literature is improved slightly by monitoring
the CV squared instead of the CV itself. The numerical results
show that this improvement gives better performance for Run
Rules charts. Moreover, we will show through simulation that
the precision and accuracy errors do have negative effect on the
performance Run Rules charts. We also find out that multiple
measurements per item does not high efficiency in reducing these
negative effects.