Riaz, Muhammad; Muhammad, Faqir - In: Journal of statistical and econometric methods 1 (2012) 1, pp. 77-92
The range control chart and the X bar control chart are the well known and the most popular tools for detecting out- of-control signals in the Statistical Quality Control (SQC). The control charts has shown his worth in the manufacturing industry. In this study we have applied the range and the...